Current File : //opt/alt/postgresql11/usr/share/man/man7/RELEASE_SAVEPOINT.7
'\" 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"
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.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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