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Code review for FETCH/MOVE 0 changes. Improve documentation, do the

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right thing with the destination when FETCH 0 can't return a row,
don't try to stuff LONG_MAX into an int value.
This commit is contained in:
Tom Lane
2003-01-08 00:22:27 +00:00
parent 1bc9e98549
commit 061168d38f
5 changed files with 113 additions and 74 deletions
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12
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.390 2003/01/06 00:31:44 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.391 2003/01/08 00:22:27 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -2594,7 +2594,7 @@ FetchStmt: FETCH direction fetch_how_many from_in name
if ($3 < 0)
{
$3 = -$3;
$2 = (($2 == FORWARD)? BACKWARD: FORWARD);
$2 = (($2 == FORWARD) ? BACKWARD : FORWARD);
}
n->direction = $2;
n->howMany = $3;
@ -2652,7 +2652,7 @@ FetchStmt: FETCH direction fetch_how_many from_in name
if ($3 < 0)
{
$3 = -$3;
$2 = (($2 == FORWARD) ? BACKWARD: FORWARD);
$2 = (($2 == FORWARD) ? BACKWARD : FORWARD);
}
n->direction = $2;
n->howMany = $3;
@ -2720,8 +2720,8 @@ direction: FORWARD { $$ = FORWARD; }
fetch_how_many:
Iconst { $$ = $1; }
| '-' Iconst { $$ = - $2; }
| ALL { $$ = LONG_MAX; }
| LAST { $$ = LONG_MAX; }
| ALL { $$ = INT_MAX; }
| LAST { $$ = INT_MAX; }
| NEXT { $$ = 1; }
| PRIOR { $$ = -1; }
;
@ -7115,8 +7115,8 @@ unreserved_keyword:
| INVOKER
| ISOLATION
| KEY
| LANGUAGE
| LANCOMPILER
| LANGUAGE
| LAST
| LEVEL
| LISTEN