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160 lines
3.1 KiB
Plaintext
160 lines
3.1 KiB
Plaintext
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/rollback.sgml,v 1.6 1999/07/22 15:09:14 thomas Exp $
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Postgres documentation
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-->
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<refentry id="SQL-ROLLBACK">
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<refmeta>
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<refentrytitle id="SQL-ROLLBACK-TITLE">
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ROLLBACK
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</refentrytitle>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>
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ROLLBACK
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</refname>
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<refpurpose>
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Aborts the current transaction
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1999-07-20</date>
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</refsynopsisdivinfo>
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<synopsis>
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ROLLBACK [ WORK | TRANSACTION ]
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</synopsis>
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<refsect2 id="R2-SQL-ROLLBACK-1">
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<refsect2info>
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<date>1998-09-24</date>
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</refsect2info>
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<title>
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Inputs
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</title>
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<para>
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None.
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</para>
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</refsect2>
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<refsect2 id="R2-SQL-ROLLBACK-2">
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<refsect2info>
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<date>1998-09-24</date>
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</refsect2info>
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<title>
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Outputs
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</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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ABORT
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</computeroutput></term>
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<listitem>
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<para>
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Message returned if successful.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>
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NOTICE: UserAbortTransactionBlock and not in in-progress state
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ABORT
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</computeroutput></term>
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<listitem>
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<para>
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If there is not any transaction currently in progress.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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</refsynopsisdiv>
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<refsect1 id="R1-SQL-ROLLBACK-1">
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<refsect1info>
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<date>1998-09-24</date>
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</refsect1info>
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<title>
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Description
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</title>
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<para>
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<command>ROLLBACK</command> rolls back the current transaction and causes
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all the updates made by the transaction to be discarded.
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</para>
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<refsect2 id="R2-SQL-ROLLBACK-3">
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<refsect2info>
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<date>1998-09-24</date>
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</refsect2info>
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<title>
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Notes
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</title>
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<para>
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The keywords WORK and TRANSACTION are noise and can be omitted.
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</para>
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<para>
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Use <xref linkend="SQL-COMMIT-TITLE" endterm="SQL-COMMIT-TITLE">
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to successfully terminate a transaction.
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<xref linkend="SQL-ABORT-TITLE" endterm="SQL-ABORT-TITLE"> is a
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synonym for <command>ROLLBACK</command>.
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</para>
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</refsect2>
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</refsect1>
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<refsect1 id="R1-SQL-ROLLBACK-2">
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<title>
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Usage
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</title>
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<para>
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To abort all changes:
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<programlisting>
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ROLLBACK WORK;
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</programlisting>
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</para>
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</refsect1>
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<refsect1 id="R1-SQL-ROLLBACK-3">
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<title>
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Compatibility
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</title>
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<refsect2 id="R2-SQL-ROLLBACK-4">
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<refsect2info>
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<date>1998-09-24</date>
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</refsect2info>
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<title>
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SQL92
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</title>
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<para>
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Full compatibility. The TRANSACTION keyword is a
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<productname>Postgres</productname> extension.
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</para>
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</refsect2>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:nil
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"../reference.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:"/usr/lib/sgml/catalog"
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sgml-local-ecat-files:nil
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End:
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-->
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