MySQL - The difference between int, bigint, mediumint, smallint, and tinyint
MySQL supports the SQL standard integer types INTEGER (or INT) and SMALLINT. As an extension to the standard, MySQL also supports the integer types TINYINT, MEDIUMINT, and BIGINT. They have different sizes of storage and ranges of acceptable values.
| Type | Storage (Bytes) | Minimum Value Signed | Minimum Value Unsigned | Maximum Value Signed | Maximum Value Unsigned |
|---|---|---|---|---|---|
| TINYINT | 1 | -128 | 0 | 127 | 255 |
| SMALLINT | 2 | -32768 | 0 | 32767 | 65535 |
| MEDIUMINT | 3 | -8388608 | 0 | 8388607 | 16777215 |
| INT | 4 | -2147483648 | 0 | 2147483647 | 4294967295 |
| BIGINT | 8 | -2^63 | 0 | 2^63 -1 | 2^64-1 |
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