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fix for aggregates

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This commit is contained in:
Bruce Momjian 1999-01-27 16:15:01 +00:00
parent 2ae5d51668
commit d611ccb874
1 changed files with 15 additions and 21 deletions
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36
src/backend/executor/nodeAgg.c
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@ -129,7 +129,7 @@ ExecAgg(Agg *node)
econtext = aggstate->csstate.cstate.cs_ExprContext;
nagg = length(node->aggs);
value1 = node->aggstate->csstate.cstate.cs_ExprContext->ecxt_values;
nulls = node->aggstate->csstate.cstate.cs_ExprContext->ecxt_nulls;
@ -158,7 +158,7 @@ ExecAgg(Agg *node)
xfn2_oid,
finalfn_oid;
aggno++;
aggref->aggno = ++aggno;
/* ---------------------
* find transfer functions of all the aggregates and initialize
@ -252,14 +252,15 @@ ExecAgg(Agg *node)
TupleDesc tupType;
Datum *tupValue;
char *null_array;
AttrNumber attnum;
tupType = aggstate->csstate.css_ScanTupleSlot->ttc_tupleDescriptor;
tupValue = projInfo->pi_tupValue;
/* initially, set all the values to NULL */
null_array = palloc(sizeof(char) * tupType->natts);
for (aggno = 0; aggno < tupType->natts; aggno++)
null_array[aggno] = 'n';
for (attnum = 0; attnum < tupType->natts; attnum++)
null_array[attnum] = 'n';
oneTuple = heap_formtuple(tupType, tupValue, null_array);
pfree(null_array);
}
@ -328,8 +329,8 @@ ExecAgg(Agg *node)
attnum = ((Var *) aggref->target)->varattno;
attlen = outerslot->ttc_tupleDescriptor->attrs[attnum - 1]->attlen;
byVal = outerslot->ttc_tupleDescriptor->attrs[attnum - 1]->attbyval;
break;
case T_Expr:
{
FunctionCachePtr fcache_ptr;
@ -340,8 +341,8 @@ ExecAgg(Agg *node)
fcache_ptr = ((Oper *) tagnode)->op_fcache;
attlen = fcache_ptr->typlen;
byVal = fcache_ptr->typbyval;
break;
}
case T_Const:
attlen = ((Const *) aggref->target)->constlen;
@ -371,10 +372,8 @@ ExecAgg(Agg *node)
*/
args[0] = value1[aggno];
args[1] = newVal;
value1[aggno] =
(Datum) fmgr_c(&aggfns->xfn1,
(FmgrValues *) args,
&isNull1);
value1[aggno] = (Datum) fmgr_c(&aggfns->xfn1,
(FmgrValues *) args, &isNull1);
Assert(!isNull1);
}
}
@ -383,8 +382,7 @@ ExecAgg(Agg *node)
{
Datum xfn2_val = value2[aggno];
value2[aggno] =
(Datum) fmgr_c(&aggfns->xfn2,
value2[aggno] = (Datum) fmgr_c(&aggfns->xfn2,
(FmgrValues *) &xfn2_val, &isNull2);
Assert(!isNull2);
}
@ -481,9 +479,8 @@ ExecAgg(Agg *node)
* As long as the retrieved group does not match the
* qualifications it is ignored and the next group is fetched
*/
if(node->plan.qual != NULL){
qual_result = ExecQual(fix_opids(node->plan.qual), econtext);
}
if(node->plan.qual != NULL)
qual_result = ExecQual(fix_opids(node->plan.qual), econtext);
else qual_result = false;
if (oneTuple)
@ -523,8 +520,7 @@ ExecInitAgg(Agg *node, EState *estate, Plan *parent)
/*
* assign node's base id and create expression context
*/
ExecAssignNodeBaseInfo(estate, &aggstate->csstate.cstate,
(Plan *) parent);
ExecAssignNodeBaseInfo(estate, &aggstate->csstate.cstate, (Plan *) parent);
ExecAssignExprContext(estate, &aggstate->csstate.cstate);
#define AGG_NSLOTS 2
@ -536,8 +532,7 @@ ExecInitAgg(Agg *node, EState *estate, Plan *parent)
ExecInitResultTupleSlot(estate, &aggstate->csstate.cstate);
econtext = aggstate->csstate.cstate.cs_ExprContext;
econtext->ecxt_values =
(Datum *) palloc(sizeof(Datum) * length(node->aggs));
econtext->ecxt_values = (Datum *) palloc(sizeof(Datum) * length(node->aggs));
MemSet(econtext->ecxt_values, 0, sizeof(Datum) * length(node->aggs));
econtext->ecxt_nulls = (char *) palloc(sizeof(char) * length(node->aggs));
MemSet(econtext->ecxt_nulls, 0, sizeof(char) * length(node->aggs));
@ -665,8 +660,7 @@ aggGetAttr(TupleTableSlot *slot,
return (Datum) tempSlot;
}
result =
heap_getattr(heapTuple, /* tuple containing attribute */
result = heap_getattr(heapTuple, /* tuple containing attribute */
attnum, /* attribute number of desired attribute */
tuple_type,/* tuple descriptor of tuple */
isNull); /* return: is attribute null? */