LENGTH
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Syntax
LENGTH(str)
Description
Returns the length of the string str, measured in bytes. A multi-byte
character counts as multiple bytes. This means that for a string
containing five two-byte characters, LENGTH() returns 10, whereas
CHAR_LENGTH() returns 5. If str is not a string value, it is converted into string. If str is NULL, the function returns NULL.
Examples
SELECT LENGTH('MariaDB');
+-------------------+
| LENGTH('MariaDB') |
+-------------------+
| 7 |
+-------------------+
SELECT SELECT LENGTH('π');
+--------------+
| LENGTH('π') |
+--------------+
| 2 |
+--------------+
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