Int | UInt Types
ClickHouse offers a number of fixed-length integers,
with a sign (Int) or without a sign (unsigned UInt) ranging from one byte to 32 bytes.
When creating tables, numeric parameters for integer numbers can be set (e.g. TINYINT(8), SMALLINT(16), INT(32), BIGINT(64)), but ClickHouse ignores them.
Integer Ranges
Integer types have the following ranges:
| Type | Range |
|---|---|
Int8 | [-128 : 127] |
Int16 | [-32768 : 32767] |
Int32 | [-2147483648 : 2147483647] |
Int64 | [-9223372036854775808 : 9223372036854775807] |
Int128 | [-170141183460469231731687303715884105728 : 170141183460469231731687303715884105727] |
Int256 | [-57896044618658097711785492504343953926634992332820282019728792003956564819968 : 57896044618658097711785492504343953926634992332820282019728792003956564819967] |
Unsigned integer types have the following ranges:
| Type | Range |
|---|---|
UInt8 | [0 : 255] |
UInt16 | [0 : 65535] |
UInt32 | [0 : 4294967295] |
UInt64 | [0 : 18446744073709551615] |
UInt128 | [0 : 340282366920938463463374607431768211455] |
UInt256 | [0 : 115792089237316195423570985008687907853269984665640564039457584007913129639935] |
Integer Aliases
Integer types have the following aliases:
| Type | Alias |
|---|---|
Int8 | TINYINT, INT1, BYTE, TINYINT SIGNED, INT1 SIGNED |
Int16 | SMALLINT, SMALLINT SIGNED |
Int32 | INT, INTEGER, MEDIUMINT, MEDIUMINT SIGNED, INT SIGNED, INTEGER SIGNED |
Int64 | BIGINT, SIGNED, BIGINT SIGNED, TIME |
Unsigned integer types have the following aliases:
| Type | Alias |
|---|---|
UInt8 | TINYINT UNSIGNED, INT1 UNSIGNED |
UInt16 | SMALLINT UNSIGNED |
UInt32 | MEDIUMINT UNSIGNED, INT UNSIGNED, INTEGER UNSIGNED |
UInt64 | UNSIGNED, BIGINT UNSIGNED, BIT, SET |