Wiki / Functions

Returns all or part of a text file, starting at the given byte offset, returning at most length bytes (less if the end of file is reached first). If offset is negative, it is relative to the end of the file. If offset and length are omitted, the entire file is returned. The bytes read from the file are interpreted as a string in the database's encoding; an error is thrown if they are not valid in that encoding.

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

group

admin

group label

系统管理函数

lang

en

layout

table-new

pages

functions-admin.html

prose only

false

pg_read_file ( filename text [, offset bigint, length bigint] [, missing_ok boolean] ) → text → text

{"inputs":[{"file":"functions-admin.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"885561d57facd49c33b44a50e320a002197d700d118784cc87d6410efadbd1f6","version":"18.7"},{"file":"functions-admin.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"830e894d29fec30b7c350c915fcaed4a63b24d57f2c96150bf25fa07fb43849c","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"}