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Postgres FD Implementation
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Abuhujair Javed
Postgres FD Implementation
Commits
802a4d41
Commit
802a4d41
authored
Feb 03, 2003
by
Bruce Momjian
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Change MOVE LAST to MOVE ALL.
Standard says FETCH LAST is after last row, and we don't do that.
parent
c7bceca1
Changes
4
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4 changed files
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12 additions
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25 deletions
+12
-25
doc/src/sgml/ref/fetch.sgml
doc/src/sgml/ref/fetch.sgml
+6
-17
doc/src/sgml/ref/move.sgml
doc/src/sgml/ref/move.sgml
+3
-2
src/backend/parser/gram.y
src/backend/parser/gram.y
+2
-4
src/backend/parser/keywords.c
src/backend/parser/keywords.c
+1
-2
No files found.
doc/src/sgml/ref/fetch.sgml
View file @
802a4d41
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/fetch.sgml,v 1.2
3 2003/01/08 00:22:26 tgl
Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/fetch.sgml,v 1.2
4 2003/02/03 14:04:24 momjian
Exp $
PostgreSQL documentation
-->
...
...
@@ -22,7 +22,7 @@ PostgreSQL documentation
</refsynopsisdivinfo>
<synopsis>
FETCH [ <replaceable class="PARAMETER">direction</replaceable> ] [ <replaceable class="PARAMETER">count</replaceable> ] { IN | FROM } <replaceable class="PARAMETER">cursor</replaceable>
FETCH [ FORWARD | BACKWARD | RELATIVE ] [ <replaceable class="PARAMETER">#</replaceable> | ALL |
LAST |
NEXT | PRIOR ]
FETCH [ FORWARD | BACKWARD | RELATIVE ] [ <replaceable class="PARAMETER">#</replaceable> | ALL | NEXT | PRIOR ]
{ IN | FROM } <replaceable class="PARAMETER">cursor</replaceable>
</synopsis>
...
...
@@ -105,17 +105,6 @@ FETCH [ FORWARD | BACKWARD | RELATIVE ] [ <replaceable class="PARAMETER">#</repl
</listitem>
</varlistentry>
<varlistentry>
<term>
LAST
</term>
<listitem>
<para>
Same as <literal>ALL</>, but conforms to SQL92 syntax.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
NEXT
...
...
@@ -212,7 +201,7 @@ WARNING: FETCH/ABSOLUTE not supported, using RELATIVE
If the number of rows remaining in the cursor is less
than <replaceable class="PARAMETER">#</replaceable>,
then only those available are fetched.
Substituting the keyword ALL
or LAST
in place of a number will
Substituting the keyword ALL in place of a number will
cause all remaining rows in the cursor to be retrieved.
Rows may be fetched in both FORWARD and BACKWARD
directions. The default direction is FORWARD.
...
...
@@ -220,13 +209,13 @@ WARNING: FETCH/ABSOLUTE not supported, using RELATIVE
<para>
The cursor position can be before the first row of the query result, or on
any particular row of the result
, or after the last row of the result
.
any particular row of the result.
When created, a cursor is positioned before the first row. After fetching
some rows, the cursor is positioned on the last row retrieved. A new
<command>FETCH</command> always steps one row in the specified direction
(if possible) before beginning to return rows. If the
<command>FETCH</command> requests more rows than available, the cursor is
left positioned
after the last row of the query result (or before
the first
left positioned
on the last row of the query result (or on
the first
row, in the case of a backward fetch). This will always be the case after
<command>FETCH ALL</>.
</para>
...
...
@@ -236,7 +225,7 @@ WARNING: FETCH/ABSOLUTE not supported, using RELATIVE
A zero row count requests fetching the current row without moving the
cursor --- that is, re-fetching the most recently fetched row.
This will succeed unless the cursor is positioned before the
first row
or after the last row
; in which case, no row is returned.
first row; in which case, no row is returned.
</para>
</tip>
...
...
doc/src/sgml/ref/move.sgml
View file @
802a4d41
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/move.sgml,v 1.1
6 2003/01/08 00:22:26 tgl
Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/move.sgml,v 1.1
7 2003/02/03 14:04:24 momjian
Exp $
PostgreSQL documentation
-->
...
...
@@ -34,7 +34,8 @@ MOVE [ <replaceable class="PARAMETER">direction</replaceable> ] [ <replaceable c
</title>
<para>
<command>MOVE</command> allows the user to move the cursor position a
specified number of rows, or all the way to the end or start of the query.
specified number of rows, or to the beginning or end of the cursor.
<command>MOVE ALL</command> moves to the last row of the cursor.
<command>MOVE</command> works exactly like the <command>FETCH</command>
command, except it only repositions the cursor and does not return rows.
</para>
...
...
src/backend/parser/gram.y
View file @
802a4d41
...
...
@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.39
7 2003/02/02 23:46:38 tgl
Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.39
8 2003/02/03 14:04:24 momjian
Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
...
...
@@ -361,7 +361,7 @@ static void doNegateFloat(Value *v);
KEY
LANCOMPILER LANGUAGE L
AST L
EADING LEFT LEVEL LIKE LIMIT
LANCOMPILER LANGUAGE LEADING LEFT LEVEL LIKE LIMIT
LISTEN LOAD LOCAL LOCALTIME LOCALTIMESTAMP LOCATION
LOCK_P
...
...
@@ -2713,7 +2713,6 @@ fetch_how_many:
Iconst { $$ = $1; }
| '-' Iconst { $$ = - $2; }
| ALL { $$ = INT_MAX; }
| LAST { $$ = INT_MAX; }
| NEXT { $$ = 1; }
| PRIOR { $$ = -1; }
;
...
...
@@ -7131,7 +7130,6 @@ unreserved_keyword:
| KEY
| LANCOMPILER
| LANGUAGE
| LAST
| LEVEL
| LISTEN
| LOAD
...
...
src/backend/parser/keywords.c
View file @
802a4d41
...
...
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.13
2 2002/12/12 20:35:13 tgl
Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.13
3 2003/02/03 14:04:24 momjian
Exp $
*
*-------------------------------------------------------------------------
*/
...
...
@@ -172,7 +172,6 @@ static const ScanKeyword ScanKeywords[] = {
{
"key"
,
KEY
},
{
"lancompiler"
,
LANCOMPILER
},
{
"language"
,
LANGUAGE
},
{
"last"
,
LAST
},
{
"leading"
,
LEADING
},
{
"left"
,
LEFT
},
{
"level"
,
LEVEL
},
...
...
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