Note:
Cockroach Labs supports the current stable release and two releases prior. Therefore, this version will no longer be supported after the Spring 2019 release.

Supported Types

CockroachDB supports the following data types. Click a type for more details.

Type Description Example
INT A signed integer, up to 64 bits. 12345
UUID New in v1.1: A 128-bit hexadecimal value. 7f9c24e8-3b12-4fef-91e0-56a2d5a246ec
SERIAL A unique 64-bit signed integer. 148591304110702593
DECIMAL An exact, fixed-point number. 1.2345
FLOAT A 64-bit, inexact, floating-point number. 1.2345
BOOL A Boolean value. true
DATE A date. DATE '2016-01-25'
TIMESTAMP A date and time pairing. TIMESTAMP '2016-01-25 10:10:10'
INTERVAL A span of time. INTERVAL '2h30m30s'
STRING A string of Unicode characters. 'a1b2c3'
COLLATE The COLLATE feature lets you sort STRING values according to language- and country-specific rules, known as collations. 'a1b2c3' COLLATE en
BYTES A string of binary characters. b'\141\061\142\062\143\063'
ARRAY New in v1.1: A 1-dimensional, 1-indexed, homogeneous array of any non-array data type. {"sky","road","car"}

Data Type Conversions & Casts

CockroachDB supports explicit type conversions using the following methods:

  • <type> 'string literal', to convert from the literal representation of a value to a value of that type. For example: DATE '2008-12-21', INT '123', or BOOL 'true'.

  • <value>::<data type>, or its equivalent longer form CAST(<value> AS <data type>), which converts an arbitrary expression of one built-in type to another (this is also known as type coercion or "casting"). For example: NOW()::DECIMAL, VARIANCE(a+2)::INT.

    Tip:

    To create constant values, consider using a type annotation instead of a cast, as it provides more predictable results.

  • Other built-in conversion functions when the type is not a SQL type, for example from_ip(), to_ip() to convert IP addresses between STRING and BYTES values.

You can find each data type's supported converstion and casting on its respective page in its section Supported Casting & Conversion.



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