'\" t
.\"     Title: ROLLBACK
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 2016
.\"    Manual: PostgreSQL 9.5.2 Documentation
.\"    Source: PostgreSQL 9.5.2
.\"  Language: English
.\"
.TH "ROLLBACK" "5sql" "2016" "PostgreSQL 9.5.2" "PostgreSQL 9.5.2 Documentation"
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.SH "NAME"
ROLLBACK \- abort the current transaction
.SH "SYNOPSIS"
.sp
.nf
ROLLBACK [ WORK | TRANSACTION ]
.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
.SH "NOTES"
.PP
Use
\fBCOMMIT\fR(5)
to successfully terminate a transaction\&.
.PP
Issuing
\fBROLLBACK\fR
outside of a transaction block emits a warning and otherwise has no effect\&.
.SH "EXAMPLES"
.PP
To abort all changes:
.sp
.if n \{\
.RS 4
.\}
.nf
ROLLBACK;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
The SQL standard only specifies the two forms
ROLLBACK
and
ROLLBACK WORK\&. Otherwise, this command is fully conforming\&.
.SH "SEE ALSO"
\fBBEGIN\fR(5), \fBCOMMIT\fR(5), ROLLBACK TO SAVEPOINT (\fBROLLBACK_TO_SAVEPOINT\fR(5))