UUID_v7

Generate a time-ordered UUID (v7). This function returns a version 7 UUID, which is sortable by creation time.

UUID_v7 is available from MariaDB 11.7.

It is possible to generate UUIDv4 and UUIDv7, in addition to UUIDv1.

Syntax

UUID_v7()

Description

Returns a Universally Unique Identifier (UUID) version 7. To generate a version 1 UUID, see the UUID function. To generate a version 4 UUID, see UUID_v4.

A UUID is designed as a number that is globally unique in space and time. Two calls to UUID() are expected to generate two different values, even if these calls are performed on two separate computers that are not connected to each other.

A UUID is a 128-bit number represented by a utf8 string of five hexadecimal numbers in aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee format.

Statements using the UUID_v7() function are not safe for statement-based replication.

Examples

SELECT UUID(),UUID_v4(),UUID_v7()\G 
*************************** 1. row ***************************
  UUID(): 63ae8c92-799a-11ef-98b2-f859713e4be4
UUID_v4(): a2443495-1b94-415b-b6fa-fe8e79ba4812
UUID_v7(): 01921e85-f198-7490-9b89-7dd0d468543b

See Also

• UUID() v1

• UUID_v4()

• UUID_SHORT() - Return short (64 bit) Universal Unique Identifier

• SYS_GUID - UUID without the - character for Oracle compatibility

• UUID data type

• MDEV-11339 (Support UUID v4 generation)

• MDEV-32637 (Implement native UUID7 function)

• uuid7.com

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