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Fix markup for docbook2man man page generation.
No big deal; fixed lots of other markup at the same time. Bigest change: make sure there is no whitespace in front of <term> contents. This will probably help the other output types too.
This commit is contained in:
Thomas G. Lockhart
@@ -1,300 +1,287 @@
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<REFENTRY ID="SQL-FETCH">
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<REFMETA>
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<REFENTRYTITLE>
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FETCH
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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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FETCH
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</REFNAME>
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<REFPURPOSE>
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Gets rows using a cursor
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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>1998-09-01</DATE>
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</REFSYNOPSISDIVINFO>
|
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<SYNOPSIS>
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FETCH [ <REPLACEABLE CLASS="PARAMETER">selector</REPLACEABLE> ] [ <REPLACEABLE CLASS="PARAMETER">count</REPLACEABLE> ]
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{ IN | FROM } <REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
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FETCH [ RELATIVE ] [ { [ <REPLACEABLE CLASS="PARAMETER">#</REPLACEABLE> | ALL | NEXT | PRIOR ] } ]
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FROM ] <REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
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</SYNOPSIS>
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<refentry id="SQL-FETCH">
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<refmeta>
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<refentrytitle>
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FETCH
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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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FETCH
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</refname>
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<refpurpose>
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Gets rows using a cursor
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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>1998-09-01</date>
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</refsynopsisdivinfo>
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<synopsis>
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FETCH [ <replaceable class="PARAMETER">selector</replaceable> ] [ <replaceable class="PARAMETER">count</replaceable> ] { IN | FROM } <replaceable class="PARAMETER">cursor</replaceable>
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FETCH [ RELATIVE ] [ { [ <replaceable class="PARAMETER">#</replaceable> | ALL | NEXT | PRIOR ] } ] FROM ] <replaceable class="PARAMETER">cursor</replaceable>
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</synopsis>
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<REFSECT2 ID="R2-SQL-FETCH-1">
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<REFSECT2INFO>
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<DATE>1998-09-01</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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<refsect2 id="R2-SQL-FETCH-1">
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<refsect2info>
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<date>1998-09-01</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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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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<REPLACEABLE CLASS="PARAMETER">selector</REPLACEABLE>
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</TERM>
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<LISTITEM>
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<PARA>
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<REPLACEABLE CLASS="PARAMETER">selector</REPLACEABLE>
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defines the fetch direction. It can be one
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the following:
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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FORWARD
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</TERM>
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<LISTITEM>
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<PARA>
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fetch next row(s). This is the default
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if <REPLACEABLE CLASS="PARAMETER">selector</REPLACEABLE> is omitted.
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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>
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BACKWARD
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</TERM>
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<LISTITEM>
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<PARA>
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fetch previous row(s).
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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>
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RELATIVE
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</TERM>
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<LISTITEM>
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<PARA>
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Noise word for SQL92 compatibility.
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</para>
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</listitem>
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</varlistentry>
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<variablelist>
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<varlistentry>
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<term><replaceable class="PARAMETER">selector</replaceable></term>
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<listitem>
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<para>
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<replaceable class="PARAMETER">selector</replaceable>
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defines the fetch direction. It can be one
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the following:
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<variablelist>
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<varlistentry>
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<term>FORWARD</term>
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<listitem>
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<para>
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fetch next row(s). This is the default
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if <replaceable class="PARAMETER">selector</replaceable> is omitted.
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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>BACKWARD</term>
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<listitem>
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<para>
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fetch previous row(s).
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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>RELATIVE</term>
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<listitem>
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<para>
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Noise word for SQL92 compatibility.
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</para>
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</listitem>
|
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</varlistentry>
|
||||
</variablelist>
|
||||
</para>
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||||
</listitem>
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||||
</varlistentry>
|
||||
|
||||
<VARLISTENTRY>
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||||
<TERM>
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||||
<REPLACEABLE CLASS="PARAMETER">count</REPLACEABLE>
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||||
</TERM>
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||||
<LISTITEM>
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<PARA>
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<REPLACEABLE CLASS="PARAMETER">count</REPLACEABLE>
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determines how many rows to fetch. It can be one of the following:
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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><replaceable class="PARAMETER">count</replaceable></term>
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<listitem>
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||||
<para>
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<replaceable class="PARAMETER">count</replaceable>
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determines how many rows to fetch. It can be one of the following:
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<variablelist>
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<varlistentry>
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<term><replaceable class="PARAMETER">#</replaceable></term>
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<listitem>
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<para>
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A signed integer that specify how many rows to fetch.
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Note that a negative integer is equivalent to changing the sense of
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FORWARD and BACKWARD.
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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>
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<REPLACEABLE CLASS="PARAMETER">#</REPLACEABLE>
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||||
</TERM>
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||||
<LISTITEM>
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||||
<PARA>
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||||
A signed integer that specify how many rows to fetch.
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Note that a negative integer is equivalent to changing the sense of
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FORWARD and BACKWARD.
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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>
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ALL
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</term>
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<listitem>
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<para>
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Retrieve all remaining rows.
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</para>
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</listitem>
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||||
</varlistentry>
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||||
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||||
<VARLISTENTRY>
|
||||
<TERM>
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||||
ALL
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||||
</TERM>
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||||
<LISTITEM>
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||||
<PARA>
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||||
Retrieve all remaining rows.
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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>
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NEXT
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</term>
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||||
<listitem>
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<para>
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Equivalent to specifying a count of <command>1</command>.
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</para>
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</listitem>
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</varlistentry>
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||||
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||||
<VARLISTENTRY>
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||||
<TERM>
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||||
NEXT
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||||
</TERM>
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||||
<LISTITEM>
|
||||
<PARA>
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||||
Equivalent to specifying a count of <command>1</command>.
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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>
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PRIOR
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</term>
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<listitem>
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<para>
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Equivalent to specifying a count of <command>-1</command>.
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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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</listitem>
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</varlistentry>
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||||
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<VARLISTENTRY>
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<TERM>
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PRIOR
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</TERM>
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<LISTITEM>
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<PARA>
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Equivalent to specifying a count of <command>-1</command>.
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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><replaceable class="PARAMETER">cursor</replaceable></term>
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<listitem>
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<para>
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An open cursor's name.
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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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<VARLISTENTRY>
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||||
<TERM>
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<REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
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</TERM>
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<LISTITEM>
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<PARA>
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An open cursor's name.
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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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<refsect2 id="R2-SQL-FETCH-2">
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<refsect2info>
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<date>1998-04-15</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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<command>FETCH</command> returns the results of the query defined by the specified cursor.
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The following messages will be returned if the query fails:
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<REFSECT2 ID="R2-SQL-FETCH-2">
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||||
<REFSECT2INFO>
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||||
<DATE>1998-04-15</DATE>
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||||
</REFSECT2INFO>
|
||||
<TITLE>
|
||||
Outputs
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||||
</TITLE>
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||||
<PARA>
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||||
FETCH returns the results of the query defined by the specified cursor.
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||||
The following messages will be returned if the query fails:
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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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NOTICE: PerformPortalFetch: portal "<replaceable class="PARAMETER">cursor</replaceable>" not found
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||||
</computeroutput></term>
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<listitem>
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||||
<para>
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||||
If <replaceable class="PARAMETER">cursor</replaceable>
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is not previously declared.
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||||
The cursor must be declared within a transaction block.
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||||
</para>
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||||
</listitem>
|
||||
</varlistentry>
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||||
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||||
<VARIABLELIST>
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||||
<VARLISTENTRY>
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||||
<TERM>
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||||
NOTICE: PerformPortalFetch: portal "<REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>" not found
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||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
If <REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
|
||||
is not previously declared.
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||||
The cursor must be declared within a transaction block.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<VARLISTENTRY>
|
||||
<TERM>
|
||||
<varlistentry>
|
||||
<term><computeroutput>
|
||||
NOTICE: FETCH/ABSOLUTE not supported, using RELATIVE
|
||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
<productname>Postgres</productname> does not support absolute
|
||||
positioning of cursors.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</computeroutput></term>
|
||||
<listitem>
|
||||
<para>
|
||||
<productname>Postgres</productname> does not support absolute
|
||||
positioning of cursors.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<VARLISTENTRY>
|
||||
<TERM>
|
||||
<varlistentry>
|
||||
<term><computeroutput>
|
||||
ERROR: FETCH/RELATIVE at current position is not supported
|
||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
<acronym>SQL92</acronym> allows one to repetatively retrieve the cursor
|
||||
at its "current position" using the syntax
|
||||
<programlisting>
|
||||
FETCH RELATIVE 0 FROM <REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
|
||||
</programlisting>
|
||||
</computeroutput></term>
|
||||
<listitem>
|
||||
<para>
|
||||
<acronym>SQL92</acronym> allows one to repetatively retrieve the cursor
|
||||
at its "current position" using the syntax
|
||||
<synopsis>
|
||||
FETCH RELATIVE 0 FROM <replaceable class="PARAMETER">cursor</replaceable>
|
||||
</synopsis>
|
||||
</para>
|
||||
|
||||
<productname>Postgres</productname> does not currently support
|
||||
this notion; in fact the value zero is reserved to indicate that
|
||||
all rows should be retrieved and is equivalent to specifying the ALL keyword.
|
||||
If the RELATIVE keyword has been used, the <productname>Postgres</productname>
|
||||
assumes that the user intended <acronym>SQL92</acronym> behavior
|
||||
and returns this error message.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<para>
|
||||
<productname>Postgres</productname> does not currently support
|
||||
this notion; in fact the value zero is reserved to indicate that
|
||||
all rows should be retrieved and is equivalent to specifying the ALL keyword.
|
||||
If the RELATIVE keyword has been used, the <productname>Postgres</productname>
|
||||
assumes that the user intended <acronym>SQL92</acronym> behavior
|
||||
and returns this error message.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
</variablelist>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect2>
|
||||
</refsynopsisdiv>
|
||||
|
||||
</REFSECT2>
|
||||
</REFSYNOPSISDIV>
|
||||
|
||||
<REFSECT1 ID="R1-SQL-FETCH-1">
|
||||
<REFSECT1INFO>
|
||||
<DATE>1998-04-15</DATE>
|
||||
</REFSECT1INFO>
|
||||
<TITLE>
|
||||
Description
|
||||
</TITLE>
|
||||
<PARA>
|
||||
<refsect1 id="R1-SQL-FETCH-1">
|
||||
<refsect1info>
|
||||
<date>1998-04-15</date>
|
||||
</refsect1info>
|
||||
<title>
|
||||
Description
|
||||
</title>
|
||||
<para>
|
||||
FETCH allows a user to retrieve rows using a cursor.
|
||||
The number of rows retrieved is specified by
|
||||
<REPLACEABLE CLASS="PARAMETER">#</REPLACEABLE>.
|
||||
<replaceable class="PARAMETER">#</replaceable>.
|
||||
If the number of rows remaining in the cursor is less
|
||||
than <REPLACEABLE CLASS="PARAMETER">#</REPLACEABLE>,
|
||||
then only those available are fetched.
|
||||
than <replaceable class="PARAMETER">#</replaceable>,
|
||||
then only those available are fetched.
|
||||
Substituting the keyword ALL in place of a number will
|
||||
cause all remaining rows in the cursor to be retrieved.
|
||||
Instances may be fetched in both FORWARD and BACKWARD
|
||||
directions. The default direction is FORWARD.
|
||||
|
||||
<tip>
|
||||
<para>
|
||||
Negative numbers are now allowed to be specified for the
|
||||
row count. A negative number is equivalent to reversing
|
||||
the sense of the FORWARD and BACKWARD keywords. For example,
|
||||
<command>FORWARD -1</command> is the same as <command>BACKWARD 1</command>.
|
||||
</para>
|
||||
</tip>
|
||||
</para>
|
||||
<para>
|
||||
Note that the FORWARD and BACKWARD keywords are
|
||||
<productname>Postgres</productname> extensions.
|
||||
The <acronym>SQL92</acronym> syntax is also supported, specified
|
||||
in the second form of the command. See below for details
|
||||
on compatibility issues.
|
||||
</para>
|
||||
<para>
|
||||
<tip>
|
||||
<para>
|
||||
Negative numbers are now allowed to be specified for the
|
||||
row count. A negative number is equivalent to reversing
|
||||
the sense of the FORWARD and BACKWARD keywords. For example,
|
||||
<command>FORWARD -1</command> is the same as <command>BACKWARD 1</command>.
|
||||
</para>
|
||||
</tip>
|
||||
</para>
|
||||
<para>
|
||||
Note that the FORWARD and BACKWARD keywords are
|
||||
<productname>Postgres</productname> extensions.
|
||||
The <acronym>SQL92</acronym> syntax is also supported, specified
|
||||
in the second form of the command. See below for details
|
||||
on compatibility issues.
|
||||
</para>
|
||||
<para>
|
||||
Once all rows are fetched, every other fetch access returns
|
||||
no rows.
|
||||
</para>
|
||||
</para>
|
||||
|
||||
<para>
|
||||
<para>
|
||||
Updating data in a cursor is not supported by
|
||||
<productname>Postgres</productname>,
|
||||
<productname>Postgres</productname>,
|
||||
because mapping cursor updates back to base tables is
|
||||
not generally possible, as is also the case with VIEW updates.
|
||||
Consequently,
|
||||
not generally possible, as is also the case with VIEW updates.
|
||||
Consequently,
|
||||
users must issue explicit UPDATE commands to replace data.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
<para>
|
||||
Cursors may only be used inside of transactions because
|
||||
the data that they store spans multiple user queries.
|
||||
</para>
|
||||
</para>
|
||||
|
||||
<REFSECT2 ID="R2-SQL-FETCH-3">
|
||||
<REFSECT2INFO>
|
||||
<DATE>1998-04-15</DATE>
|
||||
</REFSECT2INFO>
|
||||
<TITLE>
|
||||
Notes
|
||||
</TITLE>
|
||||
<PARA>
|
||||
Refer to MOVE statements to change cursor position.
|
||||
Refer to DECLARE statements to declare a cursor.
|
||||
Refer to BEGIN WORK, COMMIT WORK, ROLLBACK WORK statements
|
||||
for further information about transactions.
|
||||
</para>
|
||||
</REFSECT2>
|
||||
</refsect1>
|
||||
<refsect2 id="R2-SQL-FETCH-3">
|
||||
<refsect2info>
|
||||
<date>1998-04-15</date>
|
||||
</refsect2info>
|
||||
<title>
|
||||
Notes
|
||||
</title>
|
||||
<para>
|
||||
Use <command>MOVE</command> to change cursor position.
|
||||
<command>DECLARE</command> will define a cursor.
|
||||
Refer to <command>BEGIN</command>, <command>COMMIT</command>, and
|
||||
<command>ROLLBACK</command>
|
||||
for further information about transactions.
|
||||
</para>
|
||||
</refsect2>
|
||||
</refsect1>
|
||||
|
||||
<REFSECT1 ID="R1-SQL-FETCH-2">
|
||||
<TITLE>
|
||||
Usage
|
||||
</TITLE>
|
||||
<PARA>
|
||||
<ProgramListing>
|
||||
<refsect1 id="R1-SQL-FETCH-2">
|
||||
<title>
|
||||
Usage
|
||||
</title>
|
||||
<para>
|
||||
<programlisting>
|
||||
--set up and use a cursor:
|
||||
--
|
||||
BEGIN WORK;
|
||||
@@ -326,82 +313,75 @@ Usage
|
||||
--
|
||||
CLOSE liahona;
|
||||
COMMIT WORK;
|
||||
</ProgramListing>
|
||||
</para>
|
||||
</REFSECT1>
|
||||
</programlisting>
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<REFSECT1 ID="R1-SQL-FETCH-3">
|
||||
<TITLE>
|
||||
Compatibility
|
||||
</TITLE>
|
||||
<PARA>
|
||||
The non-embedded use of cursors is a <productname>Postgres</productname>
|
||||
extension. The syntax and usage of cursors is being compared
|
||||
against the embedded form of cursors defined in <acronym>SQL92</acronym>.
|
||||
</PARA>
|
||||
<refsect1 id="R1-SQL-FETCH-3">
|
||||
<title>
|
||||
Compatibility
|
||||
</title>
|
||||
<para>
|
||||
The non-embedded use of cursors is a <productname>Postgres</productname>
|
||||
extension. The syntax and usage of cursors is being compared
|
||||
against the embedded form of cursors defined in <acronym>SQL92</acronym>.
|
||||
</para>
|
||||
|
||||
<REFSECT2 ID="R2-SQL-FETCH-4">
|
||||
<REFSECT2INFO>
|
||||
<DATE>1998-09-01</DATE>
|
||||
</REFSECT2INFO>
|
||||
<TITLE>
|
||||
SQL92
|
||||
</TITLE>
|
||||
<PARA>
|
||||
<acronym>SQL92</acronym> allows absolute positioning of the cursor for
|
||||
FETCH, and allows placing the results into explicit variables.
|
||||
<refsect2 id="R2-SQL-FETCH-4">
|
||||
<refsect2info>
|
||||
<date>1998-09-01</date>
|
||||
</refsect2info>
|
||||
<title>
|
||||
SQL92
|
||||
</title>
|
||||
<para>
|
||||
<acronym>SQL92</acronym> allows absolute positioning of the cursor for
|
||||
FETCH, and allows placing the results into explicit variables.
|
||||
|
||||
<synopsis>
|
||||
FETCH ABSOLUTE <REPLACEABLE CLASS="PARAMETER">#</REPLACEABLE>
|
||||
FROM <REPLACEABLE CLASS="PARAMETER">cursor</REPLACEABLE>
|
||||
INTO :<REPLACEABLE CLASS="PARAMETER">variable</REPLACEABLE> [, ...]
|
||||
</synopsis>
|
||||
<synopsis>
|
||||
FETCH ABSOLUTE <replaceable class="PARAMETER">#</replaceable>
|
||||
FROM <replaceable class="PARAMETER">cursor</replaceable>
|
||||
INTO :<replaceable class="PARAMETER">variable</replaceable> [, ...]
|
||||
</synopsis>
|
||||
|
||||
<VARIABLELIST>
|
||||
<VARLISTENTRY>
|
||||
<TERM>
|
||||
ABSOLUTE
|
||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
The cursor should be positioned to the specified absolute
|
||||
row number. All row numbers in <productname>Postgres</productname>
|
||||
are relative numbers so this capability is not supported.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<VARLISTENTRY>
|
||||
<TERM>
|
||||
:<REPLACEABLE CLASS="PARAMETER">variable</REPLACEABLE>
|
||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
Target host variable(s).
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect2>
|
||||
</refsect1>
|
||||
</REFENTRY>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>ABSOLUTE</term>
|
||||
<listitem>
|
||||
<para>
|
||||
The cursor should be positioned to the specified absolute
|
||||
row number. All row numbers in <productname>Postgres</productname>
|
||||
are relative numbers so this capability is not supported.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>:<replaceable class="PARAMETER">variable</replaceable></term>
|
||||
<listitem>
|
||||
<para>
|
||||
Target host variable(s).
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect2>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!--
|
||||
<REPLACEABLE CLASS="PARAMETER">
|
||||
</REPLACEABLE>
|
||||
<ReturnValue></ReturnValue>
|
||||
<PARA>
|
||||
</PARA>
|
||||
<VARIABLELIST>
|
||||
<VARLISTENTRY>
|
||||
<TERM>•
|
||||
</TERM>
|
||||
<LISTITEM>
|
||||
<PARA>
|
||||
</PARA>
|
||||
</LISTITEM>
|
||||
</VARLISTENTRY>
|
||||
</VARIABLELIST>
|
||||
<PARA>
|
||||
</PARA>
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
mode: sgml
|
||||
sgml-omittag:nil
|
||||
sgml-shorttag:t
|
||||
sgml-minimize-attributes:nil
|
||||
sgml-always-quote-attributes:t
|
||||
sgml-indent-step:1
|
||||
sgml-indent-data:t
|
||||
sgml-parent-document:nil
|
||||
sgml-default-dtd-file:"../reference.ced"
|
||||
sgml-exposed-tags:nil
|
||||
sgml-local-catalogs:"/usr/lib/sgml/catalog"
|
||||
sgml-local-ecat-files:nil
|
||||
End:
|
||||
-->
|
||||
|
||||
Reference in New Issue
Block a user