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'\" t .\" Title: RELEASE SAVEPOINT .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/> .\" Date: 2017-11-06 .\" Manual: PostgreSQL 9.2.24 Documentation .\" Source: PostgreSQL 9.2.24 .\" Language: English .\" .TH "RELEASE SAVEPOINT" "7" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" RELEASE_SAVEPOINT \- destroy a previously defined savepoint .\" RELEASE SAVEPOINT .\" savepoints: releasing .SH "SYNOPSIS" .sp .nf RELEASE [ SAVEPOINT ] \fIsavepoint_name\fR .fi .SH "DESCRIPTION" .PP \fBRELEASE SAVEPOINT\fR destroys a savepoint previously defined in the current transaction\&. .PP Destroying a savepoint makes it unavailable as a rollback point, but it has no other user visible behavior\&. It does not undo the effects of commands executed after the savepoint was established\&. (To do that, see ROLLBACK TO SAVEPOINT (\fBROLLBACK_TO_SAVEPOINT\fR(7))\&.) Destroying a savepoint when it is no longer needed allows the system to reclaim some resources earlier than transaction end\&. .PP \fBRELEASE SAVEPOINT\fR also destroys all savepoints that were established after the named savepoint was established\&. .SH "PARAMETERS" .PP \fIsavepoint_name\fR .RS 4 The name of the savepoint to destroy\&. .RE .SH "NOTES" .PP Specifying a savepoint name that was not previously defined is an error\&. .PP It is not possible to release a savepoint when the transaction is in an aborted state\&. .PP If multiple savepoints have the same name, only the one that was most recently defined is released\&. .SH "EXAMPLES" .PP To establish and later destroy a savepoint: .sp .if n \{\ .RS 4 .\} .nf BEGIN; INSERT INTO table1 VALUES (3); SAVEPOINT my_savepoint; INSERT INTO table1 VALUES (4); RELEASE SAVEPOINT my_savepoint; COMMIT; .fi .if n \{\ .RE .\} .sp The above transaction will insert both 3 and 4\&. .SH "COMPATIBILITY" .PP This command conforms to the SQL standard\&. The standard specifies that the key word SAVEPOINT is mandatory, but PostgreSQL allows it to be omitted\&. .SH "SEE ALSO" \fBBEGIN\fR(7), \fBCOMMIT\fR(7), \fBROLLBACK\fR(7), ROLLBACK TO SAVEPOINT (\fBROLLBACK_TO_SAVEPOINT\fR(7)), \fBSAVEPOINT\fR(7)
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