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Support window functions a la SQL:2008.

Browse Source 
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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88
src/backend/nodes/outfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.346 2008/12/01 21:06:12 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.347 2008/12/28 18:53:56 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@ -566,6 +566,36 @@ _outAgg(StringInfo str, Agg *node)
WRITE_LONG_FIELD(numGroups);
}
static void
_outWindowAgg(StringInfo str, WindowAgg *node)
{
int i;
WRITE_NODE_TYPE("WINDOWAGG");
_outPlanInfo(str, (Plan *) node);
WRITE_INT_FIELD(partNumCols);
appendStringInfo(str, " :partColIdx");
for (i = 0; i < node->partNumCols; i++)
appendStringInfo(str, " %d", node->partColIdx[i]);
appendStringInfo(str, " :partOperations");
for (i = 0; i < node->partNumCols; i++)
appendStringInfo(str, " %u", node->partOperators[i]);
WRITE_INT_FIELD(ordNumCols);
appendStringInfo(str, " :ordColIdx");
for (i = 0; i< node->ordNumCols; i++)
appendStringInfo(str, " %d", node->ordColIdx[i]);
appendStringInfo(str, " :ordOperations");
for (i = 0; i < node->ordNumCols; i++)
appendStringInfo(str, " %u", node->ordOperators[i]);
}
static void
_outGroup(StringInfo str, Group *node)
{
@ -798,6 +828,20 @@ _outAggref(StringInfo str, Aggref *node)
WRITE_LOCATION_FIELD(location);
}
static void
_outWindowFunc(StringInfo str, WindowFunc *node)
{
WRITE_NODE_TYPE("WINDOWFUNC");
WRITE_OID_FIELD(winfnoid);
WRITE_OID_FIELD(wintype);
WRITE_NODE_FIELD(args);
WRITE_UINT_FIELD(winref);
WRITE_BOOL_FIELD(winstar);
WRITE_BOOL_FIELD(winagg);
WRITE_LOCATION_FIELD(location);
}
static void
_outArrayRef(StringInfo str, ArrayRef *node)
{
@ -1440,6 +1484,7 @@ _outPlannerInfo(StringInfo str, PlannerInfo *node)
WRITE_NODE_FIELD(placeholder_list);
WRITE_NODE_FIELD(query_pathkeys);
WRITE_NODE_FIELD(group_pathkeys);
WRITE_NODE_FIELD(window_pathkeys);
WRITE_NODE_FIELD(distinct_pathkeys);
WRITE_NODE_FIELD(sort_pathkeys);
WRITE_FLOAT_FIELD(total_table_pages, "%.0f");
@ -1722,6 +1767,7 @@ _outSelectStmt(StringInfo str, SelectStmt *node)
WRITE_NODE_FIELD(whereClause);
WRITE_NODE_FIELD(groupClause);
WRITE_NODE_FIELD(havingClause);
WRITE_NODE_FIELD(windowClause);
WRITE_NODE_FIELD(withClause);
WRITE_NODE_FIELD(valuesLists);
WRITE_NODE_FIELD(sortClause);
@ -1744,6 +1790,7 @@ _outFuncCall(StringInfo str, FuncCall *node)
WRITE_BOOL_FIELD(agg_star);
WRITE_BOOL_FIELD(agg_distinct);
WRITE_BOOL_FIELD(func_variadic);
WRITE_NODE_FIELD(over);
WRITE_LOCATION_FIELD(location);
}
@ -1866,6 +1913,7 @@ _outQuery(StringInfo str, Query *node)
WRITE_INT_FIELD(resultRelation);
WRITE_NODE_FIELD(intoClause);
WRITE_BOOL_FIELD(hasAggs);
WRITE_BOOL_FIELD(hasWindowFuncs);
WRITE_BOOL_FIELD(hasSubLinks);
WRITE_BOOL_FIELD(hasDistinctOn);
WRITE_BOOL_FIELD(hasRecursive);
@ -1876,6 +1924,7 @@ _outQuery(StringInfo str, Query *node)
WRITE_NODE_FIELD(returningList);
WRITE_NODE_FIELD(groupClause);
WRITE_NODE_FIELD(havingQual);
WRITE_NODE_FIELD(windowClause);
WRITE_NODE_FIELD(distinctClause);
WRITE_NODE_FIELD(sortClause);
WRITE_NODE_FIELD(limitOffset);
@ -1895,6 +1944,19 @@ _outSortGroupClause(StringInfo str, SortGroupClause *node)
WRITE_BOOL_FIELD(nulls_first);
}
static void
_outWindowClause(StringInfo str, WindowClause *node)
{
WRITE_NODE_TYPE("WINDOWCLAUSE");
WRITE_STRING_FIELD(name);
WRITE_STRING_FIELD(refname);
WRITE_NODE_FIELD(partitionClause);
WRITE_NODE_FIELD(orderClause);
WRITE_UINT_FIELD(winref);
WRITE_BOOL_FIELD(copiedOrder);
}
static void
_outRowMarkClause(StringInfo str, RowMarkClause *node)
{
@ -2171,6 +2233,18 @@ _outSortBy(StringInfo str, SortBy *node)
WRITE_LOCATION_FIELD(location);
}
static void
_outWindowDef(StringInfo str, WindowDef *node)
{
WRITE_NODE_TYPE("WINDOWDEF");
WRITE_STRING_FIELD(name);
WRITE_STRING_FIELD(refname);
WRITE_NODE_FIELD(partitionClause);
WRITE_NODE_FIELD(orderClause);
WRITE_LOCATION_FIELD(location);
}
static void
_outRangeSubselect(StringInfo str, RangeSubselect *node)
{
@ -2347,6 +2421,9 @@ _outNode(StringInfo str, void *obj)
case T_Agg:
_outAgg(str, obj);
break;
case T_WindowAgg:
_outWindowAgg(str, obj);
break;
case T_Group:
_outGroup(str, obj);
break;
@ -2392,6 +2469,9 @@ _outNode(StringInfo str, void *obj)
case T_Aggref:
_outAggref(str, obj);
break;
case T_WindowFunc:
_outWindowFunc(str, obj);
break;
case T_ArrayRef:
_outArrayRef(str, obj);
break;
@ -2616,6 +2696,9 @@ _outNode(StringInfo str, void *obj)
case T_SortGroupClause:
_outSortGroupClause(str, obj);
break;
case T_WindowClause:
_outWindowClause(str, obj);
break;
case T_RowMarkClause:
_outRowMarkClause(str, obj);
break;
@ -2661,6 +2744,9 @@ _outNode(StringInfo str, void *obj)
case T_SortBy:
_outSortBy(str, obj);
break;
case T_WindowDef:
_outWindowDef(str, obj);
break;
case T_RangeSubselect:
_outRangeSubselect(str, obj);
break;