pg_column_toast_chunk_id

Shows the chunk_id of an on-disk TOASTed value. Returns NULL if the value is un-TOASTed or not on-disk. See Section 66.2 for more information about TOAST.

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

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group: admin
group label: 系统管理函数
lang: en
layout: table-new
pages: functions-admin.html
prose only: false

Definition PG 18

Shows the chunk_id of an on-disk TOASTed value. Returns NULL if the value is un-TOASTed or not on-disk. See Section 66.2 for more information about TOAST.

Signatures and overloads

pg_column_toast_chunk_id ( "any" ) → oid → oid

Shows the chunk_id of an on-disk TOASTed value. Returns NULL if the value is un-TOASTed or not on-disk. See Section 66.2 for more information about TOAST.

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Complete source facts

documentation revision

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Source references

Original manual reference

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:5a1bdccc9c4302b882f861afaa5abe2b7fdd4400492c1f2ff8f38b3f5f5896a7

Text language: en · wiki-repair-20261023:5a1bdccc9c4302b882f861afaa5abe2b7fdd4400492c1f2ff8f38b3f5f5896a7