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>ROLLBACK</H1
><DIV
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><A
NAME="AEN77222"
></A
><H2
>Name</H2
>ROLLBACK -- abort the current transaction</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN77227"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ROLLBACK [ WORK | TRANSACTION ]</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN77229"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>ROLLBACK</TT
> rolls back the current transaction and causes
all the updates made by the transaction to be discarded.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN77233"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>WORK</TT
><BR><TT
CLASS="LITERAL"
>TRANSACTION</TT
></DT
><DD
><P
> Optional key words. They have no effect.
</P
></DD
></DL
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><DIV
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><A
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></A
><H2
>Notes</H2
><P
> Use <A
HREF="sql-commit.html"
>COMMIT</A
> to
successfully terminate a transaction.
</P
><P
> Issuing <TT
CLASS="COMMAND"
>ROLLBACK</TT
> when not inside a transaction does
no harm, but it will provoke a warning message.
</P
></DIV
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><A
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></A
><H2
>Examples</H2
><P
> To abort all changes:
</P><PRE
CLASS="PROGRAMLISTING"
>ROLLBACK;</PRE
><P></P
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><A
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></A
><H2
>Compatibility</H2
><P
> The SQL standard only specifies the two forms
<TT
CLASS="LITERAL"
>ROLLBACK</TT
> and <TT
CLASS="LITERAL"
>ROLLBACK
WORK</TT
>. Otherwise, this command is fully conforming.
</P
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><A
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></A
><H2
>See Also</H2
><A
HREF="sql-begin.html"
>BEGIN</A
>, <A
HREF="sql-commit.html"
>COMMIT</A
>, <A
HREF="sql-rollback-to.html"
>ROLLBACK TO SAVEPOINT</A
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