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'\" t
.\" Title: ROLLBACK
.\" Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2024
.\" Manual: PostgreSQL 16.2 Documentation
.\" Source: PostgreSQL 16.2
.\" Language: English
.\"
.TH "ROLLBACK" "7" "2024" "PostgreSQL 16.2" "PostgreSQL 16.2 Documentation"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
ROLLBACK \- abort the current transaction
.SH "SYNOPSIS"
.sp
.nf
ROLLBACK [ WORK | TRANSACTION ] [ AND [ NO ] CHAIN ]
.fi
.SH "DESCRIPTION"
.PP
\fBROLLBACK\fR
rolls back the current transaction and causes all the updates made by the transaction to be discarded\&.
.SH "PARAMETERS"
.PP
WORK
.br
TRANSACTION
.RS 4
Optional key words\&. They have no effect\&.
.RE
.PP
AND CHAIN
.RS 4
If
AND CHAIN
is specified, a new (not aborted) transaction is immediately started with the same transaction characteristics (see
SET TRANSACTION (\fBSET_TRANSACTION\fR(7))) as the just finished one\&. Otherwise, no new transaction is started\&.
.RE
.SH "NOTES"
.PP
Use
\fBCOMMIT\fR
to successfully terminate a transaction\&.
.PP
Issuing
\fBROLLBACK\fR
outside of a transaction block emits a warning and otherwise has no effect\&.
\fBROLLBACK AND CHAIN\fR
outside of a transaction block is an error\&.
.SH "EXAMPLES"
.PP
To abort all changes:
.sp
.if n \{\
.RS 4
.\}
.nf
ROLLBACK;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
The command
\fBROLLBACK\fR
conforms to the SQL standard\&. The form
ROLLBACK TRANSACTION
is a PostgreSQL extension\&.
.SH "SEE ALSO"
\fBBEGIN\fR(7), \fBCOMMIT\fR(7), ROLLBACK TO SAVEPOINT (\fBROLLBACK_TO_SAVEPOINT\fR(7))
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