DEALLOCATE

deallocate a prepared statement

English manual coverage begins with PostgreSQL 6.4. Source history and runtime observations have their own recorded version boundaries.

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anchor: SQL-DEALLOCATE
file: sql-deallocate.html
lang: en
name: DEALLOCATE
purpose: deallocate a prepared statement
purpose zh: 释放一个预备语句
sections same as: Unknown
slug: 18
synopsis html: DEALLOCATE [ PREPARE ] { <em class="replaceable"><code>name</code></em> | ALL }
synopsis text: DEALLOCATE [ PREPARE ] { name | ALL }

Syntax

DEALLOCATE [ PREPARE ] { name | ALL }

Syntax diagrams

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Definition PG 18

DEALLOCATE [ PREPARE ] { name | ALL }

Description

DEALLOCATE is used to deallocate a previously prepared SQL statement. If you do not explicitly deallocate a prepared statement, it is deallocated when the session ends.

For more information on prepared statements, see PREPARE.

Parameters

PREPARE: This key word is ignored.
name: The name of the prepared statement to deallocate.
ALL: Deallocate all prepared statements.

Compatibility

The SQL standard includes a DEALLOCATE statement, but it is only for use in embedded SQL.

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Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:72607ee5bbb79b9a69e787d8ae4cf16d689b86dcbbc684de372d2407f542f4d6

Text language: en · wiki-repair-20261023:72607ee5bbb79b9a69e787d8ae4cf16d689b86dcbbc684de372d2407f542f4d6