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Commitab22b34

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committed
Fixes:
While a normal SELECT statement can contain a GROUP BY clause, a cursordeclaration cannot. This was not the case in PG-1.0. Was there a goodreason why this was changed? Are cursors being phased out? Is there any wayto get data with just a SELECT (and without a DECLARE CURSOR ...)?The patch below seems to fix things. If anyone can see a problem with it,please let me know. Thanks.Submitted by: David Smith <dasmith@perseus.tufts.edu>
1 parentc4e53a1 commitab22b34

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3 files changed

+11
-5
lines changed

3 files changed

+11
-5
lines changed

‎src/backend/nodes/parsenodes.h

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: parsenodes.h,v 1.1.1.1 1996/07/09 06:21:33 scrappy Exp $
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* $Id: parsenodes.h,v 1.2 1996/08/06 16:27:48 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -462,6 +462,7 @@ typedef struct CursorStmt {
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List*targetList;/* the target list (of ResTarget) */
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List*fromClause;/* the from clause */
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Node*whereClause;/* qualifications */
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List*groupClause;/* group by clause */
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List*orderClause;/* sort clause (a list of SortBy's) */
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}CursorStmt;
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‎src/backend/parser/analyze.c

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.3 1996/07/20 07:58:04 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.4 1996/08/06 16:27:56 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -509,6 +509,10 @@ transformCursorStmt(ParseState *pstate, CursorStmt *stmt)
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qry->sortClause=transformSortClause(stmt->orderClause,
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qry->targetList,
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qry->uniqueFlag);
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/* fix group by clause */
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qry->groupClause=transformGroupClause(pstate,
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stmt->groupClause);
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qry->rtable=pstate->p_rtable;
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if (pstate->p_numAgg>0)

‎src/backend/parser/gram.y

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.2 1996/07/23 02:23:33 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.3 1996/08/06 16:27:59 scrappy Exp $
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*
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* HISTORY
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* AUTHORDATEMAJOR EVENT
@@ -1349,7 +1349,7 @@ ReplaceStmt: UPDATE relation_name
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CursorStmt: DECLARE name opt_binary CURSOR FOR
13511351
SELECT opt_unique res_target_list2
1352-
from_clause where_clause sort_clause
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from_clause where_clausegroup_clausesort_clause
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{
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CursorStmt *n = makeNode(CursorStmt);
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@@ -1370,7 +1370,8 @@ CursorStmt: DECLARE name opt_binary CURSOR FOR
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n->targetList = $8;
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n->fromClause = $9;
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n->whereClause = $10;
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n->orderClause = $11;
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n->groupClause = $11;
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n->orderClause = $12;
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$$ = (Node *)n;
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}
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;

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