database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-15 19:21:59 +03:00
Code Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

21
src/backend/parser/gram.y
View File

@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.388 2002/12/12 20:35:13 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.389 2002/12/30 15:31:47 momjian Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -2591,13 +2591,6 @@ comment_text:
FetchStmt: FETCH direction fetch_how_many from_in name
{
FetchStmt *n = makeNode(FetchStmt);
if ($2 == RELATIVE)
{
if ($3 == 0)
elog(ERROR,
"FETCH / RELATIVE at current position is not supported");
$2 = FORWARD;
}
if ($3 < 0)
{
$3 = -$3;
@ -2629,10 +2622,6 @@ FetchStmt: FETCH direction fetch_how_many from_in name
| FETCH direction from_in name
{
FetchStmt *n = makeNode(FetchStmt);
if ($2 == RELATIVE)
{
$2 = FORWARD;
}
n->direction = $2;
n->howMany = 1;
n->portalname = $4;
@ -2719,20 +2708,20 @@ FetchStmt: FETCH direction fetch_how_many from_in name
direction: FORWARD { $$ = FORWARD; }
| BACKWARD { $$ = BACKWARD; }
| RELATIVE { $$ = RELATIVE; }
| RELATIVE { $$ = FORWARD; }
| ABSOLUTE
{
elog(NOTICE,
"FETCH / ABSOLUTE not supported, using RELATIVE");
$$ = RELATIVE;
$$ = FORWARD;
}
;
fetch_how_many:
Iconst { $$ = $1; }
| '-' Iconst { $$ = - $2; }
| ALL { $$ = INT_MAX; }
| LAST { $$ = INT_MAX; }
| ALL { $$ = LONG_MAX; }
| LAST { $$ = LONG_MAX; }
| NEXT { $$ = 1; }
| PRIOR { $$ = -1; }
;