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Support window functions a la SQL:2008.

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Hitoshi Harada, with some kibitzing from Heikki and Tom.
This commit is contained in:
Tom Lane
2008-12-28 18:54:01 +00:00
parent 38e9348282
commit 95b07bc7f5
92 changed files with 6720 additions and 321 deletions
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54
src/backend/nodes/equalfuncs.c
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@@ -22,7 +22,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.341 2008/12/19 16:25:17 petere Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.342 2008/12/28 18:53:56 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -191,6 +191,20 @@ _equalAggref(Aggref *a, Aggref *b)
return true;
}
static bool
_equalWindowFunc(WindowFunc *a, WindowFunc *b)
{
COMPARE_SCALAR_FIELD(winfnoid);
COMPARE_SCALAR_FIELD(wintype);
COMPARE_NODE_FIELD(args);
COMPARE_SCALAR_FIELD(winref);
COMPARE_SCALAR_FIELD(winstar);
COMPARE_SCALAR_FIELD(winagg);
COMPARE_LOCATION_FIELD(location);
return true;
}
static bool
_equalArrayRef(ArrayRef *a, ArrayRef *b)
{
@@ -839,6 +853,7 @@ _equalQuery(Query *a, Query *b)
COMPARE_SCALAR_FIELD(resultRelation);
COMPARE_NODE_FIELD(intoClause);
COMPARE_SCALAR_FIELD(hasAggs);
COMPARE_SCALAR_FIELD(hasWindowFuncs);
COMPARE_SCALAR_FIELD(hasSubLinks);
COMPARE_SCALAR_FIELD(hasDistinctOn);
COMPARE_SCALAR_FIELD(hasRecursive);
@@ -849,6 +864,7 @@ _equalQuery(Query *a, Query *b)
COMPARE_NODE_FIELD(returningList);
COMPARE_NODE_FIELD(groupClause);
COMPARE_NODE_FIELD(havingQual);
COMPARE_NODE_FIELD(windowClause);
COMPARE_NODE_FIELD(distinctClause);
COMPARE_NODE_FIELD(sortClause);
COMPARE_NODE_FIELD(limitOffset);
@@ -903,6 +919,7 @@ _equalSelectStmt(SelectStmt *a, SelectStmt *b)
COMPARE_NODE_FIELD(whereClause);
COMPARE_NODE_FIELD(groupClause);
COMPARE_NODE_FIELD(havingClause);
COMPARE_NODE_FIELD(windowClause);
COMPARE_NODE_FIELD(withClause);
COMPARE_NODE_FIELD(valuesLists);
COMPARE_NODE_FIELD(sortClause);
@@ -1894,6 +1911,7 @@ _equalFuncCall(FuncCall *a, FuncCall *b)
COMPARE_SCALAR_FIELD(agg_star);
COMPARE_SCALAR_FIELD(agg_distinct);
COMPARE_SCALAR_FIELD(func_variadic);
COMPARE_NODE_FIELD(over);
COMPARE_LOCATION_FIELD(location);
return true;
@@ -1980,6 +1998,18 @@ _equalSortBy(SortBy *a, SortBy *b)
return true;
}
static bool
_equalWindowDef(WindowDef *a, WindowDef *b)
{
COMPARE_STRING_FIELD(name);
COMPARE_STRING_FIELD(refname);
COMPARE_NODE_FIELD(partitionClause);
COMPARE_NODE_FIELD(orderClause);
COMPARE_LOCATION_FIELD(location);
return true;
}
static bool
_equalRangeSubselect(RangeSubselect *a, RangeSubselect *b)
{
@@ -2106,6 +2136,19 @@ _equalSortGroupClause(SortGroupClause *a, SortGroupClause *b)
return true;
}
static bool
_equalWindowClause(WindowClause *a, WindowClause *b)
{
COMPARE_STRING_FIELD(name);
COMPARE_STRING_FIELD(refname);
COMPARE_NODE_FIELD(partitionClause);
COMPARE_NODE_FIELD(orderClause);
COMPARE_SCALAR_FIELD(winref);
COMPARE_SCALAR_FIELD(copiedOrder);
return true;
}
static bool
_equalRowMarkClause(RowMarkClause *a, RowMarkClause *b)
{
@@ -2311,6 +2354,9 @@ equal(void *a, void *b)
case T_Aggref:
retval = _equalAggref(a, b);
break;
case T_WindowFunc:
retval = _equalWindowFunc(a, b);
break;
case T_ArrayRef:
retval = _equalArrayRef(a, b);
break;
@@ -2769,6 +2815,9 @@ equal(void *a, void *b)
case T_SortBy:
retval = _equalSortBy(a, b);
break;
case T_WindowDef:
retval = _equalWindowDef(a, b);
break;
case T_RangeSubselect:
retval = _equalRangeSubselect(a, b);
break;
@@ -2802,6 +2851,9 @@ equal(void *a, void *b)
case T_SortGroupClause:
retval = _equalSortGroupClause(a, b);
break;
case T_WindowClause:
retval = _equalWindowClause(a, b);
break;
case T_RowMarkClause:
retval = _equalRowMarkClause(a, b);
break;