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Cause FETCH 1 to return the current cursor row, or zero if at

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beginning/end of cursor.

Have MOVE return 0/1 depending on cursor position.

Matches SQL spec.

Pass cursor counter from parser as a long rather than int.

Doc updates.
This commit is contained in:
Bruce Momjian
2002-12-30 15:31:51 +00:00
parent a0fa0117a5
commit 33f0108df8
7 changed files with 56 additions and 57 deletions
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28
doc/src/sgml/ref/fetch.sgml
View File

@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/fetch.sgml,v 1.21 2002/04/21 19:02:39 thomas Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/fetch.sgml,v 1.22 2002/12/30 15:31:47 momjian Exp $
PostgreSQL documentation
-->
@ -89,7 +89,7 @@ FETCH [ FORWARD | BACKWARD | RELATIVE ] [ <replaceable class="PARAMETER">#</repl
<para>
A signed integer that specifies how many rows to fetch.
Note that a negative integer is equivalent to changing the sense of
FORWARD and BACKWARD.
FORWARD and BACKWARD. Zero re-fetches the current row.
</para>
</listitem>
</varlistentry>
@ -180,30 +180,6 @@ WARNING: FETCH/ABSOLUTE not supported, using RELATIVE
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>
ERROR: FETCH/RELATIVE at current position is not supported
</computeroutput></term>
<listitem>
<para>
<acronym>SQL92</acronym> allows one to repetitively retrieve the cursor
at its <quote>current position</quote> using the syntax
<synopsis>
FETCH RELATIVE 0 FROM <replaceable class="PARAMETER">cursor</replaceable>.
</synopsis>
</para>
<para>
<productname>PostgreSQL</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, <productname>PostgreSQL</productname>
assumes that the user intended <acronym>SQL92</acronym> behavior
and returns this error message.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>

6
doc/src/sgml/ref/move.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/move.sgml,v 1.14 2002/11/13 00:44:08 momjian Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/move.sgml,v 1.15 2002/12/30 15:31:47 momjian Exp $
PostgreSQL documentation
-->
@ -35,8 +35,8 @@ MOVE [ <replaceable class="PARAMETER">direction</replaceable> ]
Description
</title>
<para>
<command>MOVE</command> allows a user to move cursor position a specified
number of rows.
<command>MOVE</command> allows a user to move the cursor position a
specified number of rows.
<command>MOVE</command> works like the <command>FETCH</command> command,
but only positions the cursor and does not return rows.
<replaceable class="PARAMETER">LAST</replaceable> moves to the end