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+'\" t
+.\"     Title: ROLLBACK
+.\"    Author: The PostgreSQL Global Development Group
+.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
+.\"      Date: 2021
+.\"    Manual: PostgreSQL 13.4 Documentation
+.\"    Source: PostgreSQL 13.4
+.\"  Language: English
+.\"
+.TH "ROLLBACK" "7" "2021" "PostgreSQL 13.4" "PostgreSQL 13.4 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"
+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 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(7)
+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))