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Utility functions in GoogleSQL | Spanner

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GoogleSQL for Spanner supports the following utility functions.

GENERATE_UUID()

Description

Returns a random universally unique identifier (UUID) as a STRING. The returned STRING consists of 32 hexadecimal digits in five groups separated by hyphens in the form 8-4-4-4-12. The hexadecimal digits represent 122 random bits and 6 fixed bits, in compliance with RFC 4122 section 4.4. The returned STRING is lowercase.

Return Data Type

STRING

Example

The following query generates a random UUID.

SELECT GENERATE_UUID() AS uuid;

/*--------------------------------------*
 | uuid                                 |
 +--------------------------------------+
 | 4192bff0-e1e0-43ce-a4db-912808c32493 |
 *--------------------------------------*/

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Last updated 2025-08-07 UTC.

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