uuidv4

Generates a version 4 (random) UUID

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

Reading PG 18·Select a recorded version

18 19 20

group: uuid
group label: UUID 函数
lang: en
layout: table-new
pages: functions-uuid.html
prose only: false

Definition PG 18

Generates a version 4 (random) UUID

Signatures and overloads

uuidv4 ( ) → uuid → uuid

Generates a version 4 (random) UUID

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Complete source facts

documentation revision

{"inputs":[{"file":"functions-uuid.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"1145bc769b573b2bdb5619ef98fc49d54db67f2fe7bd4bec69f14c025e66453c","version":"18.7"},{"file":"functions-uuid.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"59821fb93e96c7c39838320986580f60a79cc09b1cd2d8ab9bb738768941e05a","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"}

Source references

Original manual reference

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:beabe463981e47ec28dbe74ecf5cf08c27a3a6f9fc25e0c6da8d90cd4cd826fb

Text language: en · wiki-repair-20261023:beabe463981e47ec28dbe74ecf5cf08c27a3a6f9fc25e0c6da8d90cd4cd826fb