# Functions & Operators
| Name | Description | Added |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [+](/docs/server/reference/sql-structure/operators/arithmetic-operators/addition-operator.md) | Addition operator | |
| [/](/docs/server/reference/sql-structure/operators/arithmetic-operators/division-operator.md) | Division operator | |
| [\*](/docs/server/reference/sql-structure/operators/arithmetic-operators/multiplication-operator.md) | Multiplication operator | |
| [%](/docs/server/reference/sql-structure/operators/arithmetic-operators/modulo-operator.md) | Modulo operator. Returns the remainder of N divided by M | |
| [-](/docs/server/reference/sql-structure/operators/arithmetic-operators/subtraction-operator.md) | Subtraction operator | |
| [!=](/docs/server/reference/sql-structure/operators/comparison-operators/not-equal.md) | Not equals | |
| [<](/docs/server/reference/sql-structure/operators/comparison-operators/less-than.md) | Less than | |
| [<=](/docs/server/reference/sql-structure/operators/comparison-operators/less-than-or-equal.md) | Less than or equal | |
| [<=>](/docs/server/reference/sql-structure/operators/comparison-operators/null-safe-equal.md) | NULL-safe equal | |
| [=](/docs/server/reference/sql-structure/operators/comparison-operators/equal.md) | Equal | |
| [>](/docs/server/reference/sql-structure/operators/comparison-operators/greater-than.md) | Greater than | |
| [>=](/docs/server/reference/sql-structure/operators/comparison-operators/greater-than-or-equal.md) | Greater than or equal | |
| [&](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bitwise_and.md) | Bitwise AND | |
| [<<](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/shift-left.md) | Shift left | |
| [>>](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/shift-right.md) | Shift right | |
| [^](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bitwise-xor.md) | Bitwise XOR | |
| [!](/docs/server/reference/sql-structure/operators/logical-operators/not.md) | Logical NOT | |
| [&&](/docs/server/reference/sql-structure/operators/logical-operators/and.md) | Logical AND | |
| [XOR](/docs/server/reference/sql-structure/operators/logical-operators/xor.md) | Logical XOR | |
| \| | [Bitwise OR](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bitwise-or.md) | |
| [:=](/docs/server/reference/sql-structure/operators/assignment-operators/assignment-operator.md) | Assignment operator | |
| [=](/docs/server/reference/sql-structure/operators/assignment-operators/assignment-operators-assignment-operator.md) | Assignment and comparison operator | |
| \~ | [Bitwise NOT](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bitwise-not.md) | |
| [ABS](/docs/server/reference/sql-functions/numeric-functions/abs.md) | Returns an absolute value | |
| [ACOS](/docs/server/reference/sql-functions/numeric-functions/acos.md) | Returns an arc cosine | |
| [ADD\_MONTHS](/docs/server/reference/sql-functions/date-time-functions/add_months.md) | Add months to a date | |
| [ADDDATE](/docs/server/reference/sql-functions/date-time-functions/adddate.md) | Add days or another interval to a date | |
| [ADDTIME](/docs/server/reference/sql-functions/date-time-functions/addtime.md) | Adds a time to a time or datetime | |
| [AES\_DECRYPT](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/aes_decrypt.md) | Decryption data encrypted with AES\_ENCRYPT | |
| [AES\_ENCRYPT](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/aes_encrypt.md) | Encrypts a string with the AES algorithm | |
| [AREA](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_area.md) | Synonym for ST\_AREA | |
| [AsBinary](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_asbinary.md) | Synonym for ST\_AsBinary | |
| [ASCII](/docs/server/reference/sql-functions/string-functions/ascii.md) | Numeric ASCII value of leftmost character | |
| [ASIN](/docs/server/reference/sql-functions/numeric-functions/asin.md) | Returns the arc sine | |
| [AsText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_astext.md) | Synonym for ST\_AsText | |
| [AsWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/aswkb.md) | Synonym for ST\_AsBinary | |
| [AsWKT](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_aswkt.md) | Synonym for ST\_AsText | |
| [ATAN](/docs/server/reference/sql-functions/numeric-functions/atan.md) | Returns the arc tangent | |
| [ATAN2](/docs/server/reference/sql-functions/numeric-functions/atan2.md) | Returns the arc tangent of two variables | |
| [AVG](/docs/server/reference/sql-functions/aggregate-functions/avg.md) | Returns the average value | |
| [BENCHMARK](/docs/server/reference/sql-functions/secondary-functions/information-functions/benchmark.md) | Executes an expression repeatedly | |
| [BETWEEN AND](/docs/server/reference/sql-structure/operators/comparison-operators/between-and.md) | True if expression between two values | |
| [BIN](/docs/server/reference/sql-functions/string-functions/bin.md) | Returns binary value | |
| [BINARY OPERATOR](/docs/server/reference/sql-functions/string-functions/binary-operator.md) | Casts to a binary string | |
| [BINLOG\_GTID\_POS](/docs/server/reference/sql-functions/secondary-functions/information-functions/binlog_gtid_pos.md) | Returns a string representation of the corresponding GTID position | |
| [BIT\_AND](/docs/server/reference/sql-functions/aggregate-functions/bit_and.md) | Bitwise AND | |
| [BIT\_COUNT](/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bit_count.md) | Returns the number of set bits | |
| [BIT\_LENGTH](/docs/server/reference/sql-functions/string-functions/bit_length.md) | Returns the length of a string in bits | |
| [BIT\_OR](/docs/server/reference/sql-functions/aggregate-functions/bit_or.md) | Bitwise OR | |
| [BIT\_XOR](/docs/server/reference/sql-functions/aggregate-functions/bit_xor.md) | Bitwise XOR | |
| [BOUNDARY](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_boundary.md) | Synonym for ST\_BOUNDARY | |
| [BUFFER](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/buffer.md) | Synonym for ST\_BUFFER | |
| [CASE](/docs/server/reference/sql-functions/control-flow-functions/case-operator.md) | Returns the result where value=compare\_value or for the first condition that is true | |
| [CAST](/docs/server/reference/sql-functions/string-functions/cast.md) | Casts a value of one type to another type | |
| [CEIL](/docs/server/reference/sql-functions/numeric-functions/ceil.md) | Synonym for CEILING() | |
| [CEILING](/docs/server/reference/sql-functions/numeric-functions/ceiling.md) | Returns the smallest integer not less than X | |
| [CENTROID](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/centroid.md) | Synonym for ST\_CENTROID | |
| [CHAR Function](/docs/server/reference/sql-functions/string-functions/char-function.md) | Returns string based on the integer values for the individual characters | |
| [CHARACTER\_LENGTH](/docs/server/reference/sql-functions/string-functions/character_length.md) | Synonym for CHAR\_LENGTH() | |
| [CHAR\_LENGTH](/docs/server/reference/sql-functions/string-functions/char_length.md) | Length of the string in characters | |
| [CHARSET](/docs/server/reference/sql-functions/secondary-functions/information-functions/charset.md) | Returns the character set | |
| [CHR](/docs/server/reference/sql-functions/string-functions/chr.md) | Returns a string consisting of the character given by the code values of the integer | |
| [COALESCE](/docs/server/reference/sql-structure/operators/comparison-operators/coalesce.md) | Returns the first non-NULL parameter | |
| [COERCIBILITY](/docs/server/reference/sql-functions/secondary-functions/information-functions/coercibility.md) | Returns the collation coercibility value | |
| [COLLATION](/docs/server/reference/sql-functions/secondary-functions/information-functions/collation.md) | Collation of the string argument | |
| [COLUMN\_ADD](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_add.md) | Adds or updates dynamic columns | |
| [COLUMN\_CHECK](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_check.md) | Checks if a dynamic column blob is valid | |
| [COLUMN\_CREATE](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_create.md) | Returns a dynamic columns blob | |
| [COLUMN\_DELETE](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_delete.md) | Deletes a dynamic column | |
| [COLUMN\_EXISTS](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_exists.md) | Checks is a column exists | |
| [COLUMN\_GET](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_get.md) | Gets a dynamic column value by name | |
| [COLUMN\_JSON](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_json.md) | Returns a JSON representation of dynamic column blob data | |
| [COLUMN\_LIST](/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_list.md) | Returns comma-separated list | |
| [COMPRESS](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/compress.md) | Returns a binary, compressed string | |
| [CONCAT](/docs/server/reference/sql-functions/string-functions/concat.md) | Returns concatenated string | |
| [CONCAT\_WS](/docs/server/reference/sql-functions/string-functions/concat_ws.md) | Concatenate with separator | |
| [CONNECTION\_ID](/docs/server/reference/sql-functions/secondary-functions/information-functions/connection_id.md) | Connection thread ID | |
| [CONTAINS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/contains.md) | Whether one geometry contains another | |
| [CONVERT](/docs/server/reference/sql-functions/string-functions/convert.md) | Convert a value from one type to another type | |
| [CONV](/docs/server/reference/sql-functions/numeric-functions/conv.md) | Converts numbers between different number bases | |
| [CONVERT\_TZ](/docs/server/reference/sql-functions/date-time-functions/convert_tz.md) | Converts a datetime from on time zone to another | |
| [CONVEXHULL](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/convexhull.md) | Synonym for ST\_CONVEXHULL | |
| [COS](/docs/server/reference/sql-functions/numeric-functions/cos.md) | Returns the cosine | |
| [COT](/docs/server/reference/sql-functions/numeric-functions/cot.md) | Returns the cotangent | |
| [COUNT](/docs/server/reference/sql-functions/aggregate-functions/count.md) | Returns count of non-null values | |
| [COUNT DISTINCT](/docs/server/reference/sql-functions/aggregate-functions/count-distinct.md) | Returns count of number of different non-NULL values | |
| [CRC32](/docs/server/reference/sql-functions/numeric-functions/crc32.md) | Computes a cyclic redundancy check value | |
| [CRC32C](/docs/server/reference/sql-functions/numeric-functions/crc32c.md) | Computes a cyclic redundancy check value | [MariaDB 10.8](/docs/release-notes/community-server/old-releases/10.8/what-is-mariadb-108.md) |
| [CROSSES](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/crosses.md) | Whether two geometries spatially cross | |
| [CUME\_DIST](/docs/server/reference/sql-functions/special-functions/window-functions/cume_dist.md) | Window function that returns the cumulative distribution of a given row | |
| [CURDATE](/docs/server/reference/sql-functions/date-time-functions/curdate.md) | Returns the current date | |
| [CURRENT\_DATE](/docs/server/reference/sql-functions/date-time-functions/current_date.md) | Synonym for CURDATE() | |
| [CURRENT\_ROLE](/docs/server/reference/sql-functions/secondary-functions/information-functions/current_role.md) | Current role name | |
| [CURRENT\_TIME](/docs/server/reference/sql-functions/date-time-functions/current_time.md) | Synonym for CURTIME() | |
| [CURRENT\_TIMESTAMP](/docs/server/reference/sql-functions/date-time-functions/current_timestamp.md) | Synonym for NOW() | |
| [CURRENT\_USER](/docs/server/reference/sql-functions/secondary-functions/information-functions/current_user.md) | Username/host that authenicated the current client | |
| [CURTIME](/docs/server/reference/sql-functions/date-time-functions/curtime.md) | Returns the current time | |
| [DATABASE](/docs/server/reference/sql-functions/secondary-functions/information-functions/database.md) | Current default database | |
| [DATE FUNCTION](/docs/server/reference/sql-functions/date-time-functions/date-function.md) | Extracts the date portion of a datetime | |
| [DATEDIFF](/docs/server/reference/sql-functions/date-time-functions/datediff.md) | Difference in days between two date/time values | |
| [DATE\_ADD](/docs/server/reference/sql-functions/date-time-functions/date_add.md) | Date arithmetic - addition | |
| [DATE\_FORMAT](/docs/server/reference/sql-functions/date-time-functions/date_format.md) | Formats the date value according to the format string | |
| [DATE\_SUB](/docs/server/reference/sql-functions/date-time-functions/date_sub.md) | Date arithmetic - subtraction | |
| [DAY](/docs/server/reference/sql-functions/date-time-functions/day.md) | Synonym for DAYOFMONTH() | |
| [DAYNAME](/docs/server/reference/sql-functions/date-time-functions/dayname.md) | Return the name of the weekday | |
| [DAYOFMONTH](/docs/server/reference/sql-functions/date-time-functions/dayofmonth.md) | Returns the day of the month | |
| [DAYOFWEEK](/docs/server/reference/sql-functions/date-time-functions/dayofweek.md) | Returns the day of the week index | |
| [DAYOFYEAR](/docs/server/reference/sql-functions/date-time-functions/dayofyear.md) | Returns the day of the year | |
| [DECODE](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/decode.md) | Decrypts a string encoded with ENCODE() | |
| [DECODE\_HISTOGRAM](/docs/server/reference/sql-functions/secondary-functions/information-functions/decode_histogram.md) | Returns comma separated numerics corresponding to a probability distribution represented by a histogram | |
| [DEFAULT](/docs/server/reference/sql-functions/secondary-functions/information-functions/default.md) | Returns column default | |
| [DEGREES](/docs/server/reference/sql-functions/numeric-functions/degrees.md) | Converts from radians to degrees | |
| [DENSE\_RANK](/docs/server/reference/sql-functions/special-functions/window-functions/dense_rank.md) | Rank of a given row with identical values receiving the same result, no skipping | |
| [DES\_DECRYPT](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/des_decrypt.md) | Decrypts a string encrypted with DES\_ENCRYPT() | |
| [DES\_ENCRYPT](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/des_encrypt.md) | Encrypts a string using the Triple-DES algorithm | |
| [DIMENSION](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/dimension.md) | Synonym for ST\_DIMENSION | |
| [DISJOINT](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/disjoint.md) | Whether the two elements do not intersect | |
| [DIV](/docs/server/reference/sql-functions/numeric-functions/div.md) | Integer division | |
| [ELT](/docs/server/reference/sql-functions/string-functions/elt.md) | Returns the N'th element from a set of strings | |
| [ENCODE](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/encode.md) | Encrypts a string | |
| [ENCRYPT](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/encrypt.md) | Encrypts a string with Unix crypt() | |
| [ENDPOINT](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_endpoint.md) | Synonym for ST\_ENDPOINT | |
| [ENVELOPE](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_envelope.md) | Synonym for ST\_ENVELOPE | |
| [EQUALS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/equals.md) | Indicates whether two geometries are spatially equal | |
| [EXP](/docs/server/reference/sql-functions/numeric-functions/exp.md) | e raised to the power of the argument | |
| [EXPORT\_SET](/docs/server/reference/sql-functions/string-functions/export_set.md) | Returns an on string for every bit set, an off string for every bit not set | |
| [ExteriorRing](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_exteriorring.md) | Synonym for ST\_ExteriorRing | |
| [EXTRACT](/docs/server/reference/sql-functions/date-time-functions/extract.md) | Extracts a portion of the date | |
| [EXTRACTVALUE](/docs/server/reference/sql-functions/string-functions/extractvalue.md) | Returns the text of the first text node matched by the XPath expression | |
| [FIELD](/docs/server/reference/sql-functions/string-functions/field.md) | Returns the index position of a string in a list | |
| [FIND\_IN\_SET](/docs/server/reference/sql-functions/string-functions/find_in_set.md) | Returns the position of a string in a set of strings | |
| [FLOOR](/docs/server/reference/sql-functions/numeric-functions/floor.md) | Largest integer value not greater than the argument | |
| [FORMAT](/docs/server/reference/sql-functions/string-functions/format.md) | Formats a number | |
| [FORMAT\_BYTES](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/miscellaneous-functions-format_bytes.md) | Given a byte count, returns a string consisting of a value and the units in a human-readable format. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [FORMAT\_PICO\_TIME](/docs/server/reference/sql-functions/date-time-functions/format_pico_time.md) | Given a time in picoseconds, returns a human-readable time value and unit indicator | [MariaDB 11.0.2](/docs/release-notes/community-server/old-releases/11.0/11.0.2.md) |
| [FOUND\_ROWS](/docs/server/reference/sql-functions/secondary-functions/information-functions/found_rows.md) | Number of (potentially) returned rows | |
| [FROM\_BASE64](/docs/server/reference/sql-functions/string-functions/from_base64.md) | Given a base-64 encoded string, returns the decoded result as a binary string | |
| [FROM\_DAYS](/docs/server/reference/sql-functions/date-time-functions/from_days.md) | Returns a date given a day | |
| [FROM\_UNIXTIME](/docs/server/reference/sql-functions/date-time-functions/from_unixtime.md) | Returns a datetime from a Unix timestamp | |
| [GeomCollFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomcollfromtext.md) | Synonym for ST\_GeomCollFromText | |
| [GeomCollFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomcollfromwkb.md) | Synonym for ST\_GeomCollFromWKB | |
| [GEOMETRYCOLLECTION](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/geometrycollection.md) | Constructs a WKB GeometryCollection | |
| [GeometryCollectionFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/geometrycollectionfromtext.md) | Synonym for ST\_GeomCollFromText | |
| [GeometryCollectionFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/geometrycollectionfromwkb.md) | Synonym for ST\_GeomCollFromWKB | |
| [GeometryFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/geometryfromtext.md) | Synonym for ST\_GeomFromText | |
| [GeometryFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/geometryfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [GeomFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [GeomFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [GeometryN](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_geometryn.md) | Synonym for ST\_GeometryN | |
| [GeometryType](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_geometrytype.md) | Synonym for ST\_GeometryType | |
| [GET\_FORMAT](/docs/server/reference/sql-functions/date-time-functions/get_format.md) | Returns a format string | |
| [GET\_LOCK](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/get_lock.md) | Obtain LOCK | |
| [GLENGTH](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/glength.md) | Length of a LineString value | |
| [GREATEST](/docs/server/reference/sql-structure/operators/comparison-operators/greatest.md) | Returns the largest argument | |
| [GROUP\_CONCAT](/docs/server/reference/sql-functions/aggregate-functions/group_concat.md) | Returns string with concatenated values from a group | |
| [HEX](/docs/server/reference/sql-functions/string-functions/hex.md) | Returns hexadecimal value | |
| [HOUR](/docs/server/reference/sql-functions/date-time-functions/hour.md) | Returns the hour | |
| [IF](/docs/server/reference/sql-functions/control-flow-functions/if-function.md) | If expr1 is TRUE, returns expr2; otherwise returns expr3 | |
| [IFNULL](/docs/server/reference/sql-functions/control-flow-functions/ifnull.md) | Check whether an expression is NULL | |
| [IN](/docs/server/reference/sql-structure/operators/comparison-operators/in.md) | True if expression equals any of the values in the list | |
| [INTERVAL](/docs/server/reference/sql-structure/operators/comparison-operators/interval.md) | Index of the argument that is less than the first argument | |
| [INET6\_ATON](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet6_aton.md) | Given an IPv6 or IPv4 network address, returns a VARBINARY numeric value | |
| [INET6\_NTOA](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet6_ntoa.md) | Given an IPv6 or IPv4 network address, returns the address as a nonbinary string | |
| [INET\_ATON](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet_aton.md) | Returns numeric value of IPv4 address | |
| [INET\_NTOA](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet_ntoa.md) | Returns dotted-quad representation of IPv4 address | |
| [INSERT Function](/docs/server/reference/sql-functions/string-functions/insert-function.md) | Replaces a part of a string with another string | |
| [INSTR](/docs/server/reference/sql-functions/string-functions/instr.md) | Returns the position of a string withing a string | |
| [InteriorRingN](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_interiorringn.md) | Synonym for ST\_InteriorRingN | |
| [INTERSECTS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/intersects.md) | Indicates whether two geometries spatially intersect | |
| [IS](/docs/server/reference/sql-structure/operators/comparison-operators/is.md) | Tests whether a boolean is TRUE, FALSE, or UNKNOWN | |
| [IsClosed](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/isclosed.md) | Synonym for ST\_IsClosed | |
| [IsEmpty](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_isempty.md) | Synonym for ST\_IsEmpty | |
| [IS\_FREE\_LOCK](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_free_lock.md) | Checks whether lock is free to use | |
| [IS\_IPV4](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_ipv4.md) | Whether or not an expression is a valid IPv4 address | |
| [IS\_IPV4\_COMPAT](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_ipv4_compat.md) | Whether or not an IPv6 address is IPv4-compatible | |
| [IS\_IPV4\_MAPPED](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_ipv4_mapped.md) | Whether an IPv6 address is a valid IPv4-mapped address | |
| [IS\_IPV6](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_ipv6.md) | Whether or not an expression is a valid IPv6 address | |
| [IS NOT](/docs/server/reference/sql-structure/operators/comparison-operators/is-not.md) | Tests whether a boolean value is not TRUE, FALSE, or UNKNOWN | |
| [IS NOT NULL](/docs/server/reference/sql-structure/operators/comparison-operators/is-not-null.md) | Tests whether a value is not NULL | |
| [IS NULL](/docs/server/reference/sql-structure/operators/comparison-operators/is-null.md) | Tests whether a value is NULL | |
| [ISNULL](/docs/server/reference/sql-structure/operators/comparison-operators/isnull.md) | Checks if an expression is NULL | |
| [IsRing](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/isring.md) | Synonym for ST\_IsRing | |
| [IsSimple](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/geometry-properties-issimple.md) | Synonym for ST\_IsSimple | |
| [IS\_USED\_LOCK](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_used_lock.md) | Check if lock is in use | |
| [JSON\_ARRAY](/docs/server/reference/sql-functions/special-functions/json-functions/json_array.md) | Returns a JSON array containing the listed values | |
| [JSON\_ARRAYAGG](/docs/server/reference/sql-functions/aggregate-functions/json_arrayagg.md) | Returns a JSON array containing an element for each value in a given set of JSON or SQL values. | |
| [JSON\_ARRAY\_INTERSECT](/docs/server/reference/sql-functions/special-functions/json-functions/json_array_intersect.md) | | [MariaDB 11.2.0](/docs/release-notes/community-server/old-releases/11.2/11.2.0.md) |
| [JSON\_ARRAY\_APPEND](/docs/server/reference/sql-functions/special-functions/json-functions/json_array_append.md) | Appends values to the end of the given arrays within a JSON document | |
| [JSON\_ARRAY\_INSERT](/docs/server/reference/sql-functions/special-functions/json-functions/json_array_insert.md) | Inserts a value into a JSON document | |
| [JSON\_COMPACT](/docs/server/reference/sql-functions/special-functions/json-functions/json_compact.md) | Removes all unnecessary spaces so the json document is as short as possible | |
| [JSON\_CONTAINS](/docs/server/reference/sql-functions/special-functions/json-functions/json_contains.md) | Whether a value is found in a given JSON document or at a specified path within the document | |
| [JSON\_CONTAINS\_PATH](/docs/server/reference/sql-functions/special-functions/json-functions/json_contains_path.md) | Indicates whether the given JSON document contains data at the specified path or paths | |
| [JSON\_DEPTH](/docs/server/reference/sql-functions/special-functions/json-functions/json_depth.md) | Maximum depth of a JSON document | |
| [JSON\_DETAILED](/docs/server/reference/sql-functions/special-functions/json-functions/json_detailed.md) | Represents JSON in the most understandable way emphasizing nested structures | |
| [JSON\_EQUALS](/docs/server/reference/sql-functions/special-functions/json-functions/json_equals.md) | Check for equality between JSON objects. | [MariaDB 10.7](/docs/release-notes/community-server/old-releases/10.7/what-is-mariadb-107.md) |
| [JSON\_EXISTS](/docs/server/reference/sql-functions/special-functions/json-functions/json_exists.md) | Determines whether a specified JSON value exists in the given data | |
| [JSON\_EXTRACT](/docs/server/reference/sql-functions/special-functions/json-functions/json_extract.md) | Extracts data from a JSON document. | |
| [JSON\_INSERT](/docs/server/reference/sql-functions/special-functions/json-functions/json_insert.md) | Inserts data into a JSON document | |
| [JSON\_KEY\_VALUE](/docs/server/reference/sql-functions/special-functions/json-functions/json_key_value.md) | Extracts key/value pairs from a JSON object | [MariaDB 11.2](/docs/release-notes/community-server/old-releases/11.2/what-is-mariadb-112.md) |
| [JSON\_KEYS](/docs/server/reference/sql-functions/special-functions/json-functions/json_keys.md) | Returns keys from top-level value of a JSON object or top-level keys from the path | |
| [JSON\_LENGTH](/docs/server/reference/sql-functions/special-functions/json-functions/json_length.md) | Returns the length of a JSON document, or the length of a value within the document | |
| [JSON\_LOOSE](/docs/server/reference/sql-functions/special-functions/json-functions/json_loose.md) | Adds spaces to a JSON document to make it look more readable | |
| [JSON\_MERGE](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge.md) | Merges the given JSON documents | |
| [JSON\_MERGE\_PATCH](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge.md) | RFC 7396-compliant merge of the given JSON documents | |
| [JSON\_MERGE\_PRESERVE](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge.md) | Synonym for [JSON\_MERGE\_PATCH](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge.md). | |
| [JSON\_NORMALIZE](/docs/server/reference/sql-functions/special-functions/json-functions/json_normalize.md) | Recursively sorts keys and removes spaces, allowing comparison of json documents for equality | |
| [JSON\_OBJECT](/docs/server/reference/sql-functions/special-functions/json-functions/json_object.md) | Returns a JSON object containing the given key/value pairs | |
| [JSON\_OBJECT\_FILTER\_KEYS](/docs/server/reference/sql-functions/special-functions/json-functions/json_object_filter_keys.md) | | [MariaDB 11.2.0](/docs/release-notes/community-server/old-releases/11.2/11.2.0.md) |
| [JSON\_OBJECT\_TO\_ARRAY](/docs/server/reference/sql-functions/special-functions/json-functions/json_object_to_array.md) | | [MariaDB 11.2.0](/docs/release-notes/community-server/old-releases/11.2/11.2.0.md) |
| [JSON\_OBJECTAGG](/docs/server/reference/sql-functions/aggregate-functions/json_objectagg.md) | Returns a JSON object containing key-value pairs | |
| [JSON\_OVERLAPS](/docs/server/reference/sql-functions/special-functions/json-functions/json_overlaps.md) | Compares two json documents for overlaps | [MariaDB 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) |
| [JSON\_PRETTY](/docs/server/reference/sql-functions/special-functions/json-functions/json_pretty.md) | Alias for [json\_detailed](/docs/server/reference/sql-functions/special-functions/json-functions/json_detailed.md) | [MariaDB 10.10.3](/docs/release-notes/community-server/old-releases/10.10/10.10.3.md), [MariaDB 10.9.5](/docs/release-notes/community-server/old-releases/10.9/10.9.5.md), [MariaDB 10.8.7](/docs/release-notes/community-server/old-releases/10.8/10.8.7.md), [MariaDB 10.7.8](/docs/release-notes/community-server/old-releases/10.7/10.7.8.md), [MariaDB 10.6.12](/docs/release-notes/community-server/changelogs/10.6/10.6.12.md) |
| [JSON\_QUERY](/docs/server/reference/sql-functions/special-functions/json-functions/json_query.md) | Given a JSON document, returns an object or array specified by the path | |
| [JSON\_QUOTE](/docs/server/reference/sql-functions/special-functions/json-functions/json_quote.md) | Quotes a string as a JSON value | |
| [JSON\_REMOVE](/docs/server/reference/sql-functions/special-functions/json-functions/json_remove.md) | Removes data from a JSON document | |
| [JSON\_REPLACE](/docs/server/reference/sql-functions/special-functions/json-functions/json_replace.md) | Replaces existing values in a JSON document | |
| [JSON\_SCHEMA\_VALID](/docs/server/reference/sql-functions/special-functions/json-functions/json_schema_valid.md) | Validates a JSON schema | [MariaDB 11.1.0](/docs/release-notes/community-server/old-releases/11.1/11.1.0.md) |
| [JSON\_SEARCH](/docs/server/reference/sql-functions/special-functions/json-functions/json_search.md) | Returns the path to the given string within a JSON document | |
| [JSON\_SET](/docs/server/reference/sql-functions/special-functions/json-functions/json_set.md) | Updates or inserts data into a JSON document | |
| [JSON\_TABLE](/docs/server/reference/sql-functions/special-functions/json-functions/json_table.md) | Returns a representation of a JSON document as a relational table | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [JSON\_TYPE](/docs/server/reference/sql-functions/special-functions/json-functions/json_type.md) | Returns the type of a JSON value | |
| [JSON\_UNQUOTE](/docs/server/reference/sql-functions/special-functions/json-functions/json_unquote.md) | Unquotes a JSON value, returning a string | |
| [JSON\_VALID](/docs/server/reference/sql-functions/special-functions/json-functions/json_valid.md) | Whether a value is a valid JSON document or not | |
| [JSON\_VALUE](/docs/server/reference/sql-functions/special-functions/json-functions/json_value.md) | Given a JSON document, returns the specified scalar | |
| [KDF](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/kdf.md) | Key derivation function | [MariaDB 11.3.0](/docs/release-notes/community-server/old-releases/11.3/11.3.0.md) |
| [LAST\_DAY](/docs/server/reference/sql-functions/date-time-functions/last_day.md) | Returns the last day of the month | |
| [LAST\_INSERT\_ID](/docs/server/reference/sql-functions/secondary-functions/information-functions/last_insert_id.md) | Last inserted autoinc value | |
| [LAST\_VALUE](/docs/server/reference/sql-functions/secondary-functions/information-functions/last_value.md) | Returns the last value in a list | |
| [LASTVAL](/docs/server/reference/sql-structure/sequences/sequence-functions/previous-value-for-sequence_name.md) | Get last value generated from a sequence | |
| [LCASE](/docs/server/reference/sql-functions/string-functions/lcase.md) | Synonym for \[LOWER() | |
| [LEAST](/docs/server/reference/sql-structure/operators/comparison-operators/least.md) | Returns the smallest argument | |
| [LEFT](/docs/server/reference/sql-functions/string-functions/left.md) | Returns the leftmost characters from a string | |
| [LENGTH](/docs/server/reference/sql-functions/string-functions/length.md) | Length of the string in bytes | |
| [LIKE](/docs/server/reference/sql-functions/string-functions/like.md) | Whether expression matches a pattern | |
| [LineFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_linefromtext.md) | Synonym for ST\_LineFromText | |
| [LineFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_linefromwkb.md) | Synonym for ST\_LineFromWKB | |
| [LINESTRING](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/linestring.md) | Constructs a WKB LineString value from a number of WKB Point arguments | |
| [LineStringFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/linestringfromtext.md) | Synonym for ST\_LineFromText | |
| [LineStringFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/linestringfromwkb.md) | Synonym for ST\_LineFromWKB | |
| [LN](/docs/server/reference/sql-functions/numeric-functions/ln.md) | Returns natural logarithm | |
| [LOAD\_FILE](/docs/server/reference/sql-functions/string-functions/load_file.md) | Returns file contents as a string | |
| [LOCALTIME](/docs/server/reference/sql-functions/date-time-functions/localtime.md) | Synonym for NOW() | |
| [LOCALTIMESTAMP](/docs/server/reference/sql-functions/date-time-functions/localtimestamp.md) | Synonym for NOW() | |
| [LOCATE](/docs/server/reference/sql-functions/string-functions/locate.md) | Returns the position of a substring in a string | |
| [LOG](/docs/server/reference/sql-functions/numeric-functions/log.md) | Returns the natural logarithm | |
| [LOG10](/docs/server/reference/sql-functions/numeric-functions/log10.md) | Returns the base-10 logarithm | |
| [LOG2](/docs/server/reference/sql-functions/numeric-functions/log2.md) | Returns the base-2 logarithm | |
| [LOWER](/docs/server/reference/sql-functions/string-functions/lower.md) | Returns a string with all characters changed to lowercase | |
| [LPAD](/docs/server/reference/sql-functions/string-functions/lpad.md) | Returns the string left-padded with another string to a given length | |
| [LTRIM](/docs/server/reference/sql-functions/string-functions/ltrim.md) | Returns the string with leading space characters removed | |
| [MAKE\_SET](/docs/server/reference/sql-functions/string-functions/make_set.md) | Make a set of strings that matches a bitmask | |
| [MAKEDATE](/docs/server/reference/sql-functions/date-time-functions/makedate.md) | Returns a date given a year and day | |
| [MAKETIME](/docs/server/reference/sql-functions/date-time-functions/maketime.md) | Returns a time | |
| [MASTER\_GTID\_WAIT](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/master_gtid_wait.md) | Wait until slave reaches the GTID position | |
| [MASTER\_POS\_WAIT](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/master_pos_wait.md) | Blocks until the slave has applied all specified updates | |
| [MATCH AGAINST](/docs/server/reference/sql-functions/string-functions/match-against.md) | Perform a fulltext search on a fulltext index | |
| [MAX](/docs/server/reference/sql-functions/aggregate-functions/max.md) | Returns the maximum value | |
| [MBRContains](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrcontains.md) | Whether one Minimum Bounding Rectangle contains another. | |
| [MBRCoveredBy](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrcoveredby.md) | Whether one Minimum Bounding Rectangle is covered by another. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [MBRDisjoint](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrdisjoint.md) | Whether the Minimum Bounding Rectangles of two geometries are disjoint | |
| [MBREqual](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrequal.md) | Whether the Minimum Bounding Rectangles of two geometries are the same. | |
| [MBREquals](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrequal.md) | Synonym for MBREqual. | |
| [MBRIntersects](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrintersects.md) | Indicates whether the Minimum Bounding Rectangles of the two geometries intersect | |
| [MBROverlaps](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbroverlaps.md) | Whether the Minimum Bounding Rectangles of two geometries overlap | |
| [MBRTouches](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrtouches.md) | Whether the Minimum Bounding Rectangles of two geometries touch. | |
| [MBRWithin](/docs/server/reference/sql-statements/geometry-constructors/mbr-minimum-bounding-rectangle/mbrwithin.md) | Indicates whether one Minimum Bounding Rectangle is within another | |
| [MD5](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/md5.md) | MD5 checksum | |
| [MEDIAN](/docs/server/reference/sql-functions/special-functions/window-functions/median.md) | Window function that returns the median value of a range of values | |
| [MICROSECOND](/docs/server/reference/sql-functions/date-time-functions/microsecond.md) | Returns microseconds from a date or datetime | |
| [MID](/docs/server/reference/sql-functions/string-functions/mid.md) | Synonym for SUBSTRING(str,pos,len) | |
| [MIN](/docs/server/reference/sql-functions/aggregate-functions/min.md) | Returns the minimum value | |
| [MINUTE](/docs/server/reference/sql-functions/date-time-functions/minute.md) | Returns a minute from 0 to 59 | |
| [MLineFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/mlinefromtext.md) | Constructs MULTILINESTRING using its WKT representation and SRID | |
| [MLineFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/mlinefromwkb.md) | Constructs a MULTILINESTRING | |
| [MOD](/docs/server/reference/sql-functions/numeric-functions/mod.md) | Modulo operation. Remainder of N divided by M | |
| [MONTH](/docs/server/reference/sql-functions/date-time-functions/month.md) | Returns a month from 1 to 12 | |
| [MONTHNAME](/docs/server/reference/sql-functions/date-time-functions/monthname.md) | Returns the full name of the month | |
| [MPointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/mpointfromtext.md) | Constructs a MULTIPOINT value using its WKT and SRID | |
| [MPointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/mpointfromwkb.md) | Constructs a MULTIPOINT value using its WKB representation and SRID | |
| [MPolyFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/mpolyfromtext.md) | Constructs a MULTIPOLYGON value | |
| [MPolyFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/mpolyfromwkb.md) | Constructs a MULTIPOLYGON value using its WKB representation and SRID | |
| [MULTILINESTRING](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/multilinestring.md) | Constructs a MultiLineString value | |
| [MultiLineStringFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/multilinestringfromtext.md) | Synonym for MLineFromText | |
| [MultiLineStringFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/multilinestringfromwkb.md) | A synonym for MLineFromWKB | |
| [MULTIPOINT](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/multipoint.md) | Constructs a WKB MultiPoint value | |
| [MultiPointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/multipointfromtext.md) | Synonym for MPointFromText | |
| [MultiPointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/multipointfromwkb.md) | Synonym for MPointFromWKB | |
| [MULTIPOLYGON](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/multipolygon.md) | Constructs a WKB MultiPolygon | |
| [MultiPolygonFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/multipolygonfromtext.md) | Synonym for MPolyFromText | |
| [MultiPolygonFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/multipolygonfromwkb.md) | Synonym for MPolyFromWKB | |
| [NAME\_CONST](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/name_const.md) | Returns the given value | |
| [NATURAL\_SORT\_KEY](/docs/server/reference/sql-functions/string-functions/natural_sort_key.md) | Sorting that is more similar to natural human sorting | |
| [NOT LIKE](/docs/server/reference/sql-functions/string-functions/not-like.md) | Same as NOT(expr LIKE pat \[ESCAPE 'escape\_char']) | |
| [NOT REGEXP](/docs/server/reference/sql-functions/string-functions/not-regexp.md) | Same as NOT (expr REGEXP pat) | |
| [NULLIF](/docs/server/reference/sql-functions/control-flow-functions/nullif.md) | Returns NULL if expr1 = expr2 | |
| [NEXTVAL](/docs/server/reference/sql-structure/sequences/sequence-functions/next-value-for-sequence_name.md) | Generate next value for sequence | |
| [NOT BETWEEN](/docs/server/reference/sql-structure/operators/comparison-operators/not-between.md) | Same as NOT (expr BETWEEN min AND max) | |
| [NOT IN](/docs/server/reference/sql-structure/operators/comparison-operators/not-in.md) | Same as NOT (expr IN (value,...)) | |
| [NOW](/docs/server/reference/sql-functions/date-time-functions/now.md) | Returns the current date and time | |
| [NTILE](/docs/server/reference/sql-functions/special-functions/window-functions/ntile.md) | Returns an integer indicating which group a given row falls into | |
| [NumGeometries](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_numgeometries.md) | Synonym for ST\_NumGeometries | |
| [NumInteriorRings](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_numinteriorrings.md) | Synonym for NumInteriorRings | |
| [NumPoints](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_numpoints.md) | Synonym for ST\_NumPoints | |
| [OCT](/docs/server/reference/sql-functions/numeric-functions/oct.md) | Returns octal value | |
| [OCTET\_LENGTH](/docs/server/reference/sql-functions/string-functions/octet_length.md) | Synonym for LENGTH() | |
| [OLD\_PASSWORD](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/old_password.md) | Pre MySQL 4.1 password implementation | |
| [ORD](/docs/server/reference/sql-functions/string-functions/ord.md) | Return ASCII or character code | |
| [OVERLAPS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/overlaps.md) | Indicates whether two elements spatially overlap | |
| [PASSWORD](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/password.md) | Calculates a password string | |
| [PERCENT\_RANK](/docs/server/reference/sql-functions/special-functions/window-functions/percent_rank.md) | Window function that returns the relative percent rank of a given row | |
| [PERCENTILE\_CONT](/docs/server/reference/sql-functions/special-functions/window-functions/percentile_cont.md) | Returns a value which corresponds to the given fraction in the sort order. | |
| [PERCENTILE\_DISC](/docs/server/reference/sql-functions/special-functions/window-functions/percentile_disc.md) | Returns the first value in the set whose ordered position is the same or more than the specified fraction. | |
| [PERIOD\_ADD](/docs/server/reference/sql-functions/date-time-functions/period_add.md) | Add months to a period | |
| [PERIOD\_DIFF](/docs/server/reference/sql-functions/date-time-functions/period_diff.md) | Number of months between two periods | |
| [PI](/docs/server/reference/sql-functions/numeric-functions/pi.md) | Returns the value of π (pi) | |
| [POINT](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/point.md) | Constructs a WKB Point | |
| [PointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_pointfromtext.md) | Synonym for ST\_PointFromText | |
| [PointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_pointfromwkb.md) | Synonym for PointFromWKB | |
| [PointN](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_pointn.md) | Synonym for PointN | |
| [PointOnSurface](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/pointonsurface.md) | Synonym for ST\_PointOnSurface | |
| [POLYGON](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/polygon.md) | Constructs a WKB Polygon value from a number of WKB LineString arguments | |
| [PolyFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_polyfromtext.md) | Synonym for ST\_PolyFromText | |
| [PolyFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_polyfromwkb.md) | Synonym for ST\_PolyFromWKB | |
| [PolygonFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/polygonfromtext.md) | Synonym for ST\_PolyFromText | |
| [PolygonFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/polygonfromwkb.md) | Synonym for ST\_PolyFromWKB | |
| [POSITION](/docs/server/reference/sql-functions/string-functions/position.md) | Returns the position of a substring in a string | |
| [POW](/docs/server/reference/sql-functions/numeric-functions/pow.md) | Returns X raised to the power of Y | |
| [POWER](/docs/server/reference/sql-functions/numeric-functions/power.md) | Synonym for POW() | |
| [QUARTER](/docs/server/reference/sql-functions/date-time-functions/quarter.md) | Returns year quarter from 1 to 4 | |
| [QUOTE](/docs/server/reference/sql-functions/string-functions/quote.md) | Returns quoted, properly escaped string | |
| [RADIANS](/docs/server/reference/sql-functions/numeric-functions/radians.md) | Converts from degrees to radians | |
| [RAND](/docs/server/reference/sql-functions/numeric-functions/rand.md) | Random floating-point value | |
| [RANK](/docs/server/reference/sql-functions/special-functions/window-functions/rank.md) | Rank of a given row with identical values receiving the same result | |
| [REGEXP](/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp.md) | Performs pattern matching | |
| [REGEXP\_INSTR](/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_instr.md) | Position of the first appearance of a regex | |
| [REGEXP\_REPLACE](/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_replace.md) | Replaces all occurrences of a pattern | |
| [REGEXP\_SUBSTR](/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_substr.md) | Returns the matching part of a string | |
| [RELEASE\_LOCK](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/release_lock.md) | Releases lock obtained with GET\_LOCK() | |
| [REPEAT Function](/docs/server/reference/sql-functions/string-functions/repeat-function.md) | Returns a string repeated a number of times | |
| [REPLACE Function](/docs/server/reference/sql-functions/string-functions/replace-function.md) | Replace occurrences of a string | |
| [REVERSE](/docs/server/reference/sql-functions/string-functions/reverse.md) | Reverses the order of a string | |
| [RIGHT](/docs/server/reference/sql-functions/string-functions/right.md) | Returns the rightmost N characters from a string | |
| [RLIKE](/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/rlike.md) | Synonym for REGEXP() | |
| [RPAD](/docs/server/reference/sql-functions/string-functions/rpad.md) | Returns the string right-padded with another string to a given length | |
| [ROUND](/docs/server/reference/sql-functions/numeric-functions/round.md) | Rounds a number | |
| [ROW\_COUNT](/docs/server/reference/sql-functions/secondary-functions/information-functions/row_count.md) | Number of rows affected by previous statement | |
| [ROW\_NUMBER](/docs/server/reference/sql-functions/special-functions/window-functions/row_number.md) | Row number of a given row with identical values receiving a different result | |
| [RTRIM](/docs/server/reference/sql-functions/string-functions/rtrim.md) | Returns the string with trailing space characters removed | |
| [SCHEMA](/docs/server/reference/sql-functions/secondary-functions/information-functions/schema.md) | Synonym for DATABASE() | |
| [SECOND](/docs/server/reference/sql-functions/date-time-functions/second.md) | Returns the second of a time | |
| [SEC\_TO\_TIME](/docs/server/reference/sql-functions/date-time-functions/sec_to_time.md) | Converts a second to a time | |
| [SETVAL](/docs/server/reference/sql-structure/sequences/sequence-functions/setval.md) | Set the next value to be returned by a sequence | |
| [SESSION\_USER](/docs/server/reference/sql-functions/secondary-functions/information-functions/session_user.md) | Synonym for USER() | |
| [sha](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/sha1.md) | Synonym for SHA1() | |
| [SHA1](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/sha1.md) | Calculates an SHA-1 checksum | |
| [SHA2](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/sha2.md) | Calculates an SHA-2 checksum | |
| [SIGN](/docs/server/reference/sql-functions/numeric-functions/sign.md) | Returns 1, 0 or -1 | |
| [SIN](/docs/server/reference/sql-functions/numeric-functions/sin.md) | Returns the sine | |
| [SLEEP](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/sleep.md) | Pauses for the given number of seconds | |
| [SOUNDEX](/docs/server/reference/sql-functions/string-functions/soundex.md) | Returns a string based on how the string sounds | |
| [SOUNDS LIKE](/docs/server/reference/sql-functions/string-functions/sounds-like.md) | SOUNDEX(expr1) = SOUNDEX(expr2) | |
| [SPACE](/docs/server/reference/sql-functions/string-functions/space.md) | Returns a string of space characters | |
| [SPIDER\_BG\_DIRECT\_SQL](/docs/server/server-usage/storage-engines/spider/spider-functions/spider_bg_direct_sql.md) | Background SQL execution | |
| [SPIDER\_COPY\_TABLES](/docs/server/server-usage/storage-engines/spider/spider-functions/spider_copy_tables.md) | Copy table data | |
| [SPIDER\_DIRECT\_SQL](/docs/server/server-usage/storage-engines/spider/spider-functions/spider_direct_sql.md) | Execute SQL on the remote server | |
| [SPIDER\_FLUSH\_TABLE\_MON\_CACHE](/docs/server/server-usage/storage-engines/spider/spider-functions/spider_flush_table_mon_cache.md) | Refreshing Spider monitoring server information | |
| [SQRT](/docs/server/reference/sql-functions/numeric-functions/sqrt.md) | Square root | |
| [SRID](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_srid.md) | Synonym for ST\_SRID | |
| [ST\_AREA](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_area.md) | Area of a Polygon | |
| [ST\_AsBinary](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_asbinary.md) | Converts a value to its WKB representation | |
| [ST\_AsGeoJson](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/geojson-st_asgeojson.md) | Returns a GeoJSON element from a given geometry. | |
| [ST\_AsText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_astext.md) | Converts a value to its WKT-Definition | |
| [ST\_AsWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_aswkb.md) | Synonym for ST\_AsBinary | |
| [ST\_ASWKT](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_aswkt.md) | Synonym for ST\_ASTEXT() | |
| [ST\_BOUNDARY](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_boundary.md) | Returns a geometry that is the closure of a combinatorial boundary | |
| [ST\_BUFFER](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_buffer.md) | A new geometry with a buffer added to the original geometry | |
| [ST\_CENTROID](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_centroid.md) | The mathematical centroid (geometric center) for a MultiPolygon | |
| [ST\_Collect](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_collect.md) | Returns the aggregation of the distinct geometry arguments | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_CONTAINS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-contains.md) | Whether one geometry is contained by another | |
| [ST\_CONVEXHULL](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_convexhull.md) | The minimum convex geometry enclosing all geometries within the set | |
| [ST\_CROSSES](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-crosses.md) | Whether two geometries spatially cross | |
| [ST\_DIFFERENCE](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st_difference.md) | Point set difference | |
| [ST\_DIMENSION](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_dimension.md) | Inherent dimension of a geometry value | |
| [ST\_DISJOINT](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st_disjoint.md) | Whether one geometry is spatially disjoint from another | |
| [ST\_DISTANCE](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st_distance.md) | The distance between two geometries | |
| [ST\_DISTANCE\_SPHERE](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st_distance_sphere.md) | The spherical distance between two geometries | |
| [ST\_ENDPOINT](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_endpoint.md) | Returns the endpoint of a LineString | |
| [ST\_ENVELOPE](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_envelope.md) | Returns the Minimum Bounding Rectangle for a geometry value | |
| [ST\_EQUALS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-equals.md) | Whether two geometries are spatoially equal | |
| [ST\_ExteriorRing](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_exteriorring.md) | Returns the exterior ring of a Polygon as a LineString | |
| [ST\_GeoHash](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_geohash.md) | Returns a geohash. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_GeomCollFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomcollfromtext.md) | Constructs a GEOMETRYCOLLECTION value | |
| [ST\_GeomCollFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomcollfromwkb.md) | Constructs a GEOMETRYCOLLECTION value from a WKB | |
| [ST\_GeometryCollectionFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geometrycollectionfromtext.md) | Synonym for ST\_GeomCollFromText | |
| [ST\_GeometryCollectionFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geometrycollectionfromwkb.md) | Synonym for ST\_GeomCollFromWKB | |
| [ST\_GeometryFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geometryfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_GeometryFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geometryfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_GEOMETRYN](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_geometryn.md) | Returns the N-th geometry in a GeometryCollection | |
| [ST\_GEOMETRYTYPE](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_geometrytype.md) | Returns name of the geometry type of which a given geometry instance is a member | |
| [ST\_GeomFromGeoJSON](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_geomfromgeojson.md) | Returns a geometry object from a GeoJSON input | |
| [ST\_GeomFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Constructs a geometry value using its WKT and SRID | |
| [ST\_GeomFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Constructs a geometry value using its WKB representation and SRID | |
| [ST\_InteriorRingN](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_interiorringn.md) | Returns the N-th interior ring for a Polygon | |
| [ST\_INTERSECTION](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_intersection.md) | The intersection, or shared portion, of two geometries | |
| [ST\_INTERSECTS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-intersects.md) | Whether two geometries spatially intersect | |
| [ST\_ISCLOSED](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_isclosed.md) | Returns true if a given LINESTRING's start and end points are the same | |
| [ST\_ISEMPTY](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_isempty.md) | Indicated validity of geometry value | |
| [ST\_IsRing](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_isring.md) | Returns true if a given LINESTRING is both ST\_IsClosed and ST\_IsSimple | |
| [ST\_IsSimple](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_issimple.md) | Returns true if the given Geometry has no anomalous geometric points | |
| [ST\_IsValid](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_isvalid.md) | Returns 1 if the argument is geometrically valid, 0 if not. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_LatFromGeoHash](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_latfromgeohash.md) | Returns a latitude from the given geohash. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_LongFromGeoHash](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_longfromgeohash.md) | Returns a longitude from the given geohash. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_LENGTH](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st_length.md) | Length of a LineString value | |
| [ST\_LineFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_linefromtext.md) | Creates a linestring value | |
| [ST\_LineFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_linefromwkb.md) | Constructs a LINESTRING using its WKB and SRID | |
| [ST\_LineStringFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_linestringfromtext.md) | Synonym for ST\_LineFromText | |
| [ST\_LineStringFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_linestringfromwkb.md) | Synonym for ST\_LineFromWKB | |
| [ST\_MLineFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MLineFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_MPointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MPointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_MPolyFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MPolyFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_MultiLineStringFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MultiLineStringFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_MultiPointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MultiPolygonFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_geomfromtext.md) | Synonym for ST\_GeomFromText | |
| [ST\_MultiPolygonFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_MultiPointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_geomfromwkb.md) | Synonym for ST\_GeomFromWKB | |
| [ST\_NUMGEOMETRIES](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_numgeometries.md) | Number of geometries in a GeometryCollection | |
| [ST\_NumInteriorRings](/docs/server/reference/sql-statements/geometry-constructors/polygon-properties/st_numinteriorrings.md) | Number of interior rings in a Polygon | |
| [ST\_NUMPOINTS](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_numpoints.md) | Returns the number of Point objects in a LineString | |
| [ST\_OVERLAPS](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-overlaps.md) | Whether two geometries overlap | |
| [ST\_PointFromGeoHash](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_pointfromgeohash.md) | Returns a point from the given geohash. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_PointFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_pointfromtext.md) | Constructs a POINT value | |
| [ST\_PointFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_pointfromwkb.md) | Constructs POINT using its WKB and SRID | |
| [ST\_POINTN](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_pointn.md) | Returns the N-th Point in the LineString | |
| [ST\_POINTONSURFACE](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_pointonsurface.md) | Returns a POINT guaranteed to intersect a surface | |
| [ST\_PolyFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_polyfromtext.md) | Constructs a POLYGON value | |
| [ST\_PolyFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_polyfromwkb.md) | Constructs POLYGON value using its WKB representation and SRID | |
| [ST\_PolygonFromText](/docs/server/reference/sql-statements/geometry-constructors/wkt/st_polygonfromtext.md) | Synonym for ST\_PolyFromText | |
| [ST\_PolygonFromWKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/st_polygonfromwkb.md) | Synonym for ST\_PolyFromWKB | |
| [ST\_RELATE](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_relate.md) | Returns true if two geometries are related | |
| [ST\_Simplify](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_simplify.md) | Applies the Ramer–Douglas–Peucker algorithm to provide generalized simplifications. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_SRID](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_srid.md) | Returns a Spatial Reference System ID | |
| [ST\_STARTPOINT](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_startpoint.md) | Returns the start point of a LineString | |
| [ST\_SYMDIFFERENCE](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_symdifference.md) | Portions of two geometries that don't intersect | |
| [ST\_TOUCHES](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-touches.md) | Whether one geometry g1 spatially touches another | |
| [ST\_UNION](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/st_union.md) | Union of two geometries | |
| [ST\_Validate](/docs/server/reference/sql-statements/geometry-constructors/miscellaneous-gis-functions/st_validate.md) | Whether a geometry is compliant with the WKB format and SRID syntax, and is geometrically valid. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [ST\_WITHIN](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-within.md) | Whether one geometry is within another | |
| [ST\_X](/docs/server/reference/sql-statements/geometry-constructors/point-properties/st_x.md) | X-coordinate value for a point | |
| [ST\_Y](/docs/server/reference/sql-statements/geometry-constructors/point-properties/st_y.md) | Y-coordinate for a point | |
| [STARTPOINT](/docs/server/reference/sql-statements/geometry-constructors/linestring-properties/st_startpoint.md) | Synonym for ST\_StartPoint | |
| [STD](/docs/server/reference/sql-functions/aggregate-functions/std.md) | Population standard deviation | |
| [STDDEV](/docs/server/reference/sql-functions/aggregate-functions/stddev.md) | Population standard deviation | |
| [STDDEV\_POP](/docs/server/reference/sql-functions/aggregate-functions/stddev_pop.md) | Returns the population standard deviation | |
| [STDDEV\_SAMP](/docs/server/reference/sql-functions/aggregate-functions/stddev_samp.md) | Standard deviation | |
| [STR\_TO\_DATE](/docs/server/reference/sql-functions/date-time-functions/str_to_date.md) | Converts a string to date | |
| [STRCMP](/docs/server/reference/sql-functions/string-functions/strcmp.md) | Compares two strings in sort order | |
| [SUBDATE](/docs/server/reference/sql-functions/date-time-functions/subdate.md) | Subtract a date unit or number of days | |
| [SUBSTR](/docs/server/reference/sql-functions/string-functions/substr.md) | Returns a substring from string starting at a given position | |
| [SUBSTRING](/docs/server/reference/sql-functions/string-functions/substring.md) | Returns a substring from string starting at a given position | |
| [SUBSTRING\_INDEX](/docs/server/reference/sql-functions/string-functions/substring_index.md) | Returns the substring from string before count occurrences of a delimiter | |
| [SUBTIME](/docs/server/reference/sql-functions/date-time-functions/subtime.md) | Subtracts a time from a date/time | |
| [SUM](/docs/server/reference/sql-functions/aggregate-functions/sum.md) | Sum total | |
| [SYS.EXTRACT\_SCHEMA\_FROM\_FILE\_NAME](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/extract_schema_from_file_name.md) | Given a file path, returns the schema (database) name | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.EXTRACT\_TABLE\_FROM\_FILE\_NAME](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/extract_table_from_file_name.md) | Given a file path, returns the table name | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.FORMAT\_BYTES](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/sys_schema_format_bytes.md) | Returns a string consisting of a value and the units in a human-readable format | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.FORMAT\_PATH](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/format_path.md) | Returns a modified path after replacing subpaths matching the values of various system variables with the variable name | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.FORMAT\_STATEMENT](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/format_statement.md) | Returns a reduced length string | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.FORMAT\_TIME](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/format_time.md) | Returns a human-readable time value and unit indicator | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.LIST\_ADD](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/list_add.md) | Adds a value to a given list | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.LIST\_DROP](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/list_drop.md) | Drops a value from a given list | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_IS\_ACCOUNT\_ENABLED](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_is_account_enabled.md) | Whether Performance Schema instrumentation for the given account is enabled | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_IS\_CONSUMER\_ENABLED](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_is_consumer_enabled.md) | Whether Performance Schema instrumentation for the given consumer is enabled | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_IS\_INSTRUMENT\_DEFAULT\_ENABLED](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_is_instrument_default_enabled.md) | Whether a given Performance Schema instrument is enabled by default | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_IS\_INSTRUMENT\_DEFAULT\_TIMED](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_is_instrument_default_timed.md) | Returns whether a given Performance Schema instrument is timed by default | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_IS\_THREAD\_INSTRUMENTED](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_is_thread_instrumented.md) | Returns whether or not Performance Schema instrumentation for the given connection\_id is enabled | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_THREAD\_ACCOUNT](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_thread_account.md) | Returns the account (username\@hostname) associated with the given thread\_id | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_THREAD\_ID](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_thread_id.md) | Returns the thread\_id associated with the given connection\_id | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_THREAD\_STACK](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_thread_stack.md) | Returns all statements, stages, and events within the Performance Schema for a given thread\_id | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.PS\_THREAD\_TRX\_INFO](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/ps_thread_trx_info.md) | Returns a JSON object with information about the thread specified by the given thread\_id | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.QUOTE\_IDENTIFIER](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/quote_identifier.md) | Quotes a string to produce a result that can be used as an identifier in an SQL statement | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.SYS\_GET\_CONFIG](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/sys_get_config.md) | Returns a configuration option value from the sys\_config table | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.VERSION\_MAJOR](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/version_major.md) | Returns the MariaDB Server major release version | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.VERSION\_MINOR](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/version_minor.md) | Returns the MariaDB Server minor release version | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS.VERSION\_PATCH](/docs/server/reference/system-tables/sys-schema/sys-schema-stored-functions/version_patch.md) | Returns the MariaDB Server patch release version | [MariaDB 10.6](/docs/release-notes/community-server/10.6/what-is-mariadb-106.md) |
| [SYS\_GUID](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/sys_guid.md) | Generates a globally unique identifier | |
| [SYSDATE](/docs/server/reference/sql-functions/date-time-functions/sysdate.md) | Returns the current date and time | |
| [SYSTEM\_USER](/docs/server/reference/sql-functions/secondary-functions/information-functions/system_user.md) | Synonym for USER() | |
| [TAN](/docs/server/reference/sql-functions/numeric-functions/tan.md) | Returns the tangent | |
| [TIME function](/docs/server/reference/sql-functions/date-time-functions/time-function.md) | Extracts the time | |
| [TIMEDIFF](/docs/server/reference/sql-functions/date-time-functions/timediff.md) | Returns the difference between two date/times | |
| [TIMESTAMP FUNCTION](/docs/server/reference/sql-functions/date-time-functions/timestamp-function.md) | Return the datetime, or add a time to a date/time | |
| [TIMESTAMPADD](/docs/server/reference/sql-functions/date-time-functions/timestampadd.md) | Add interval to a date or datetime | |
| [TIMESTAMPDIFF](/docs/server/reference/sql-functions/date-time-functions/timestampdiff.md) | Difference between two datetimes | |
| [TIME\_FORMAT](/docs/server/reference/sql-functions/date-time-functions/time_format.md) | Formats the time value according to the format string | |
| [TIME\_TO\_SEC](/docs/server/reference/sql-functions/date-time-functions/time_to_sec.md) | Returns the time argument, converted to seconds | |
| [TO\_BASE64](/docs/server/reference/sql-functions/string-functions/to_base64.md) | Converts a string to its base-64 encoded form | |
| [TO\_CHAR](/docs/server/reference/sql-functions/string-functions/to_char.md) | Converts a date/time type to a char | |
| [TO\_DAYS](/docs/server/reference/sql-functions/date-time-functions/to_days.md) | Number of days since year 0 | |
| [TO\_NUMBER](/docs/server/reference/sql-functions/numeric-functions/to_number.md) | Converts and expression to [NUMERIC](/docs/server/reference/data-types/numeric-data-types/numeric.md) | [MariaDB 12.2](/docs/release-notes/community-server/12.2/mariadb-12.2-changes-and-improvements.md) |
| [TO\_SECONDS](/docs/server/reference/sql-functions/date-time-functions/to_seconds.md) | Number of seconds since year 0 | |
| [TOUCHES](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/touches.md) | Whether two geometries spatially touch | |
| [TRIM](/docs/server/reference/sql-functions/string-functions/trim.md) | Returns a string with all given prefixes or suffixes removed | |
| [TRUNC](/docs/server/reference/sql-functions/date-time-functions/trunc.md) | Returns a [DATETIME](/docs/server/reference/data-types/date-and-time-data-types/datetime.md) truncated according to a given format. | [MariaDB 12.2](/docs/release-notes/community-server/12.2/mariadb-12.2-changes-and-improvements.md) |
| [TRUNCATE](/docs/server/reference/sql-functions/numeric-functions/truncate.md) | Truncates X to D decimal places | |
| [UCASE](/docs/server/reference/sql-functions/string-functions/ucase.md) | Synonym for UPPER]]\() | |
| [UNHEX](/docs/server/reference/sql-functions/string-functions/unhex.md) | Interprets pairs of hex digits as a number and converts to the character represented by the number | |
| [UNCOMPRESS](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/uncompress.md) | Uncompresses string compressed with COMPRESS() | |
| [UNCOMPRESSED\_LENGTH](/docs/server/reference/sql-functions/secondary-functions/encryption-hashing-and-compression-functions/uncompressed_length.md) | Returns length of a string before being compressed with COMPRESS() | |
| [UNIX\_TIMESTAMP](/docs/server/reference/sql-functions/date-time-functions/unix_timestamp.md) | Returns a Unix timestamp | |
| [UPDATEXML](/docs/server/reference/sql-functions/string-functions/updatexml.md) | Replace XML | |
| [UPPER](/docs/server/reference/sql-functions/string-functions/upper.md) | Changes string to uppercase | |
| [USER](/docs/server/reference/sql-functions/secondary-functions/information-functions/user.md) | Current user/host | |
| [UTC\_DATE](/docs/server/reference/sql-functions/date-time-functions/utc_date.md) | Returns the current UTC date | |
| [UTC\_TIME](/docs/server/reference/sql-functions/date-time-functions/utc_time.md) | Returns the current UTC time | |
| [UTC\_TIMESTAMP](/docs/server/reference/sql-functions/date-time-functions/utc_timestamp.md) | Returns the current UTC date and time | |
| [UUID](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/uuid.md) | Returns a Universal Unique Identifier v1 | |
| [UUIDv4](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/uuid_v4.md) | Returns a Universal Unique Identifier v4 | [MariaDB 11.7](/docs/release-notes/community-server/old-releases/11.7/what-is-mariadb-117.md) |
| [UUIDv7](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/uuid_v7.md) | Returns a Universal Unique Identifier v7 | [MariaDB 11.7](/docs/release-notes/community-server/old-releases/11.7/what-is-mariadb-117.md) |
| [UUID\_SHORT](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/uuid_short.md) | Return short universal identifier | |
| [VALUES or VALUE](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/values-value.md) | Refer to columns in INSERT ... ON DUPLICATE KEY UPDATE | |
| [VAR\_POP](/docs/server/reference/sql-functions/aggregate-functions/var_pop.md) | Population standard variance | |
| [VAR\_SAMP](/docs/server/reference/sql-functions/aggregate-functions/var_samp.md) | Returns the sample variance | |
| [VARIANCE](/docs/server/reference/sql-functions/aggregate-functions/variance.md) | Population standard variance | |
| [VEC\_DISTANCE](/docs/server/reference/sql-functions/vector-functions/vector-functions-vec_distance.md) | Calculates either a Euclidean or Cosine distance between two vectors. | [MariaDB 11.8](/docs/release-notes/community-server/11.8/what-is-mariadb-118.md) |
| [VEC\_DISTANCE\_COSINE](/docs/server/reference/sql-functions/vector-functions/vec_distance_cosine.md) | Calculates a Cosine distance between two vectors. | [MariaDB 11.7](/docs/release-notes/community-server/old-releases/11.7/what-is-mariadb-117.md) |
| [VEC\_DISTANCE\_EUCLIDEAN](/docs/server/reference/sql-functions/vector-functions/vec_distance_euclidean.md) | Calculates a Euclidean (L2) distance between two points. | [MariaDB 11.7](/docs/release-notes/community-server/old-releases/11.7/what-is-mariadb-117.md) |
| [VEC\_FromText](/docs/server/reference/sql-functions/vector-functions/vec_fromtext.md) | Converts a text representation of the vector to a vector. | [MariaDB 11.6.0](/docs/release-notes/community-server/old-releases/11.6/11.6.0.md) Vector |
| [VEC\_ToText](/docs/server/reference/sql-functions/vector-functions/vec_totext.md) | Converts a binary vector into a json array of numbers (floats). | [MariaDB 11.6.0](/docs/release-notes/community-server/old-releases/11.6/11.6.0.md) Vector |
| [VERSION](/docs/server/reference/sql-functions/secondary-functions/information-functions/version.md) | MariaDB server version | |
| [WEEK](/docs/server/reference/sql-functions/date-time-functions/week.md) | Returns the week number | |
| [WEEKDAY](/docs/server/reference/sql-functions/date-time-functions/weekday.md) | Returns the weekday index | |
| [WEEKOFYEAR](/docs/server/reference/sql-functions/date-time-functions/weekofyear.md) | Returns the calendar week of the date as a number in the range from 1 to 53 | |
| [WEIGHT\_STRING](/docs/server/reference/sql-functions/string-functions/weight_string.md) | Weight of the input string | |
| [WITHIN](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/within.md) | Indicate whether a geographic element is spacially within another | |
| [WSREP\_LAST\_SEEN\_GTID](/docs/server/reference/sql-functions/special-functions/galera-functions/wsrep_last_seen_gtid.md) | Returns the Global Transaction ID of the most recent write transaction observed by the client. | |
| [WSREP\_LAST\_WRITTEN\_GTID](/docs/server/reference/sql-functions/special-functions/galera-functions/wsrep_last_written_gtid.md) | Returns the Global Transaction ID of the most recent write transaction performed by the client. | |
| [WSREP\_SYNC\_WAIT\_UPTO\_GTID](/docs/server/reference/sql-functions/special-functions/galera-functions/wsrep_sync_wait_upto_gtid.md) | Blocks the client until the transaction specified by the given Global Transaction ID is applied and committed by the node | |
| [X](/docs/server/reference/sql-statements/geometry-constructors/point-properties/st_x.md) | Synonym for ST\_X | |
| [Y](/docs/server/reference/sql-statements/geometry-constructors/point-properties/st_y.md) | Synonym for ST\_Y | |
| [YEAR](/docs/server/reference/sql-functions/date-time-functions/year.md) | Returns the year for the given date | |
| [YEARWEEK](/docs/server/reference/sql-functions/date-time-functions/yearweek.md) | Returns year and week for a date | |
*This page is licensed: CC BY-SA / Gnu FDL*
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