SMALLINT

Overview

Integer from -32768 to 32767 when signed, or from 0 to 65535 when unsigned.

USAGE

SMALLINT[(<display_width>)] [SIGNED | UNSIGNED] [ZEROFILL]

DETAILS

Data Type

Minimum Value

Maximum Value

SMALLINT SIGNED (the default)

-32768

32767

SMALLINT UNSIGNED

0

65535

SYNONYMS

The following are synonyms for SMALLINT:

  • INT2

SCHEMA

PARAMETERS

SKYSQL

PRIVILEGES

EXAMPLES

SIGNED and UNSIGNED

The SMALLINT data type may be SIGNED (allowing negative values) or UNSIGNED (not allowing negative values).

Example of SMALLINT SIGNED (the default):

CREATE TABLE smallint_signed_example (
   description VARCHAR(20),
   example SMALLINT SIGNED
);
INSERT INTO smallint_signed_example VALUES
   ('Zero', 0),
   ('Forty-Two', 42),
   ('Minimum', -32768),
   ('Maximum', 32767);

Example of SMALLINT UNSIGNED:

CREATE TABLE smallint_unsigned_example (
   description VARCHAR(20),
   example SMALLINT UNSIGNED
);
INSERT INTO smallint_unsigned_example VALUES
   ('Zero', 0),
   ('Forty-Two', 42),
   ('Minimum', 0),
   ('Maximum', 65535);

Out-of-Range

A value is considered "out-of-range" when it is too small or too large to be stored in a data type. When sql_mode=STRICT_TRANS_TABLES (the default) is set, an out-of-range value generates an error. If strict mode is not in effect, the value is rounded to the nearest valid value without any warnings.

An example of non-strict out-of-range behavior:

TRUNCATE smallint_signed_example;

-- Disable strict mode or the inserts will fail
SET sql_mode=(SELECT REPLACE(@@sql_mode, 'STRICT_TRANS_TABLES', ''));

INSERT INTO smallint_signed_example VALUES
   ('Underflow', -32769),
   ('Overflow', 32768);
SELECT * FROM smallint_signed_example;
+-------------+---------+
| description | example |
+-------------+---------+
| Underflow   |  -32768 |
| Overflow    |   32767 |
+-------------+---------+
TRUNCATE smallint_unsigned_example;

-- Disable strict mode or the inserts will fail
SET sql_mode=(SELECT REPLACE(@@sql_mode, 'STRICT_TRANS_TABLES', ''));

INSERT INTO smallint_unsigned_example VALUES
   ('Underflow', -1),
   ('Overflow', 65536);
SELECT * FROM smallint_unsigned_example;
+-------------+---------+
| description | example |
+-------------+---------+
| Underflow   |       0 |
| Overflow    |   65535 |
+-------------+---------+

SMALLINT ZEROFILL

While Xpand accepts the SMALLINT ZEROFILL type on table create, the qualifier is ignored and silently dropped:

CREATE TABLE smallint_zerofill_example (
   description VARCHAR(20),
   example SMALLINT ZEROFILL
);
SHOW CREATE TABLE smallint_zerofill_example\G
*************************** 1. row ***************************
       Table: smallint_zerofill_example
Create Table: CREATE TABLE `smallint_zerofill_example` (
  `description` varchar(20) CHARACTER SET utf8,
  `example` smallint(6)
) CHARACTER SET utf8 /*$ SLICES=3 */

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series

History

23.09

  • Present starting in MariaDB Xpand 23.09.1.

6.1

  • Present starting in MariaDB Xpand 6.1.0.

6.0

  • Present starting in MariaDB Xpand 6.0.3.

5.3

  • Present starting in MariaDB Xpand 5.3.13.

Release Series

History

6.0

  • Present starting in MariaDB Xpand 6.0.3.

5.3

  • Present starting in MariaDB Xpand 5.3.13.

Release Series

History

6.1

  • Present starting in MariaDB Xpand 6.1.0.

EXTERNAL REFERENCES