mirror of
https://github.com/postgres/postgres.git
synced 2025-12-22 17:42:17 +03:00
3c49c6facb
Since some preparation work had already been done, the only source changes left were changing empty-element tags like <xref linkend="foo"> to <xref linkend="foo"/>, and changing the DOCTYPE. The source files are still named *.sgml, but they are actually XML files now. Renaming could be considered later. In the build system, the intermediate step to convert from SGML to XML is removed. Everything is build straight from the source files again. The OpenSP (or the old SP) package is no longer needed. The documentation toolchain instructions are updated and are much simpler now. Peter Eisentraut, Alexander Lakhin, Jürgen Purtz
125 lines
3.1 KiB
Plaintext
125 lines
3.1 KiB
Plaintext
<!--
|
|
doc/src/sgml/ref/move.sgml
|
|
PostgreSQL documentation
|
|
-->
|
|
|
|
<refentry id="sql-move">
|
|
<indexterm zone="sql-move">
|
|
<primary>MOVE</primary>
|
|
</indexterm>
|
|
|
|
<indexterm zone="sql-move">
|
|
<primary>cursor</primary>
|
|
<secondary>MOVE</secondary>
|
|
</indexterm>
|
|
|
|
<refmeta>
|
|
<refentrytitle>MOVE</refentrytitle>
|
|
<manvolnum>7</manvolnum>
|
|
<refmiscinfo>SQL - Language Statements</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>MOVE</refname>
|
|
<refpurpose>position a cursor</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<!-- Note the "direction" bit is also in ref/fetch.sgml -->
|
|
<synopsis>
|
|
MOVE [ <replaceable class="parameter">direction</replaceable> [ FROM | IN ] ] <replaceable class="parameter">cursor_name</replaceable>
|
|
|
|
<phrase>where <replaceable class="parameter">direction</replaceable> can be empty or one of:</phrase>
|
|
|
|
NEXT
|
|
PRIOR
|
|
FIRST
|
|
LAST
|
|
ABSOLUTE <replaceable class="parameter">count</replaceable>
|
|
RELATIVE <replaceable class="parameter">count</replaceable>
|
|
<replaceable class="parameter">count</replaceable>
|
|
ALL
|
|
FORWARD
|
|
FORWARD <replaceable class="parameter">count</replaceable>
|
|
FORWARD ALL
|
|
BACKWARD
|
|
BACKWARD <replaceable class="parameter">count</replaceable>
|
|
BACKWARD ALL
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>
|
|
<command>MOVE</command> repositions a cursor without retrieving any data.
|
|
<command>MOVE</command> works exactly like the <command>FETCH</command>
|
|
command, except it only positions the cursor and does not return rows.
|
|
</para>
|
|
|
|
<para>
|
|
The parameters for the <command>MOVE</command> command are identical to
|
|
those of the <command>FETCH</command> command; refer to
|
|
<xref linkend="sql-fetch"/>
|
|
for details on syntax and usage.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Outputs</title>
|
|
|
|
<para>
|
|
On successful completion, a <command>MOVE</command> command returns a command
|
|
tag of the form
|
|
<screen>
|
|
MOVE <replaceable class="parameter">count</replaceable>
|
|
</screen>
|
|
The <replaceable class="parameter">count</replaceable> is the number
|
|
of rows that a <command>FETCH</command> command with the same parameters
|
|
would have returned (possibly zero).
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<programlisting>
|
|
BEGIN WORK;
|
|
DECLARE liahona CURSOR FOR SELECT * FROM films;
|
|
|
|
-- Skip the first 5 rows:
|
|
MOVE FORWARD 5 IN liahona;
|
|
MOVE 5
|
|
|
|
-- Fetch the 6th row from the cursor liahona:
|
|
FETCH 1 FROM liahona;
|
|
code | title | did | date_prod | kind | len
|
|
-------+--------+-----+------------+--------+-------
|
|
P_303 | 48 Hrs | 103 | 1982-10-22 | Action | 01:37
|
|
(1 row)
|
|
|
|
-- Close the cursor liahona and end the transaction:
|
|
CLOSE liahona;
|
|
COMMIT WORK;
|
|
</programlisting>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Compatibility</title>
|
|
|
|
<para>
|
|
There is no <command>MOVE</command> statement in the SQL standard.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
|
|
<simplelist type="inline">
|
|
<member><xref linkend="sql-close"/></member>
|
|
<member><xref linkend="sql-declare"/></member>
|
|
<member><xref linkend="sql-fetch"/></member>
|
|
</simplelist>
|
|
</refsect1>
|
|
</refentry>
|