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-rw-r--r--src/backend/executor/nodeAgg.c89
1 files changed, 48 insertions, 41 deletions
diff --git a/src/backend/executor/nodeAgg.c b/src/backend/executor/nodeAgg.c
index a3f4f12570e..f1e0433c39d 100644
--- a/src/backend/executor/nodeAgg.c
+++ b/src/backend/executor/nodeAgg.c
@@ -45,7 +45,7 @@ typedef struct AggFuncInfo
FmgrInfo finalfn;
} AggFuncInfo;
-static Datum aggGetAttr(TupleTableSlot *tuple, Aggref *aggref, bool *isNull);
+static Datum aggGetAttr(TupleTableSlot *tuple, Aggref * aggref, bool *isNull);
/* ---------------------------------------
@@ -121,7 +121,8 @@ ExecAgg(Agg *node)
*/
/*
- * We loop retrieving groups until we find one matching node->plan.qual
+ * We loop retrieving groups until we find one matching
+ * node->plan.qual
*/
do
{
@@ -133,7 +134,7 @@ 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;
@@ -163,7 +164,7 @@ ExecAgg(Agg *node)
finalfn_oid;
aggref->aggno = ++aggno;
-
+
/* ---------------------
* find transfer functions of all the aggregates and initialize
* their initial values
@@ -172,7 +173,7 @@ ExecAgg(Agg *node)
aggname = aggref->aggname;
aggTuple = SearchSysCacheTuple(AGGNAME,
PointerGetDatum(aggname),
- ObjectIdGetDatum(aggref->basetype),
+ ObjectIdGetDatum(aggref->basetype),
0, 0);
if (!HeapTupleIsValid(aggTuple))
elog(ERROR, "ExecAgg: cache lookup failed for aggregate \"%s\"(%s)",
@@ -195,9 +196,9 @@ ExecAgg(Agg *node)
fmgr_info(xfn2_oid, &aggFuncInfo[aggno].xfn2);
aggFuncInfo[aggno].xfn2_oid = xfn2_oid;
value2[aggno] = (Datum) AggNameGetInitVal((char *) aggname,
- aggp->aggbasetype,
- 2,
- &isNull2);
+ aggp->aggbasetype,
+ 2,
+ &isNull2);
/* ------------------------------------------
* If there is a second transition function, its initial
* value must exist -- as it does not depend on data values,
@@ -213,9 +214,9 @@ ExecAgg(Agg *node)
fmgr_info(xfn1_oid, &aggFuncInfo[aggno].xfn1);
aggFuncInfo[aggno].xfn1_oid = xfn1_oid;
value1[aggno] = (Datum) AggNameGetInitVal((char *) aggname,
- aggp->aggbasetype,
- 1,
- &isNull1);
+ aggp->aggbasetype,
+ 1,
+ &isNull1);
/* ------------------------------------------
* If the initial value for the first transition function
@@ -245,6 +246,7 @@ ExecAgg(Agg *node)
outerslot = ExecProcNode(outerPlan, (Plan *) node);
if (TupIsNull(outerslot))
{
+
/*
* when the outerplan doesn't return a single tuple,
* create a dummy heaptuple anyway because we still need
@@ -299,27 +301,29 @@ ExecAgg(Agg *node)
{
if (noInitValue[aggno])
{
+
/*
- * value1 has not been initialized.
- * This is the first non-NULL input value.
- * We use it as the initial value for value1.
+ * value1 has not been initialized. This is the
+ * first non-NULL input value. We use it as the
+ * initial value for value1.
*
- * But we can't just use it straight, we have to
- * make a copy of it since the tuple from which it
- * came will be freed on the next iteration of the
+ * But we can't just use it straight, we have to make
+ * a copy of it since the tuple from which it came
+ * will be freed on the next iteration of the
* scan. This requires finding out how to copy
* the Datum. We assume the datum is of the agg's
- * basetype, or at least binary compatible with it.
+ * basetype, or at least binary compatible with
+ * it.
*/
- Type aggBaseType = typeidType(aggref->basetype);
- int attlen = typeLen(aggBaseType);
- bool byVal = typeByVal(aggBaseType);
+ Type aggBaseType = typeidType(aggref->basetype);
+ int attlen = typeLen(aggBaseType);
+ bool byVal = typeByVal(aggBaseType);
if (byVal)
value1[aggno] = newVal;
else
{
- if (attlen == -1) /* variable length */
+ if (attlen == -1) /* variable length */
attlen = VARSIZE((struct varlena *) newVal);
value1[aggno] = (Datum) palloc(attlen);
memcpy((char *) (value1[aggno]), (char *) newVal,
@@ -330,13 +334,14 @@ ExecAgg(Agg *node)
}
else
{
+
/*
* apply the transition functions.
*/
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);
}
}
@@ -344,8 +349,8 @@ ExecAgg(Agg *node)
if (aggfns->xfn2.fn_addr != NULL)
{
args[0] = value2[aggno];
- value2[aggno] = (Datum) fmgr_c(&aggfns->xfn2,
- (FmgrValues *) args, &isNull2);
+ value2[aggno] = (Datum) fmgr_c(&aggfns->xfn2,
+ (FmgrValues *) args, &isNull2);
Assert(!isNull2);
}
}
@@ -395,7 +400,7 @@ ExecAgg(Agg *node)
else
elog(NOTICE, "ExecAgg: no valid transition functions??");
value1[aggno] = (Datum) fmgr_c(&aggfns->finalfn,
- (FmgrValues *) args, &(nulls[aggno]));
+ (FmgrValues *) args, &(nulls[aggno]));
}
else if (aggfns->xfn1.fn_addr != NULL)
{
@@ -441,10 +446,11 @@ 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);
- else qual_result = false;
-
+ if (node->plan.qual != NULL)
+ qual_result = ExecQual(fix_opids(node->plan.qual), econtext);
+ else
+ qual_result = false;
+
if (oneTuple)
pfree(oneTuple);
}
@@ -466,7 +472,7 @@ ExecInitAgg(Agg *node, EState *estate, Plan *parent)
AggState *aggstate;
Plan *outerPlan;
ExprContext *econtext;
-
+
/*
* assign the node's execution state
*/
@@ -478,7 +484,7 @@ ExecInitAgg(Agg *node, EState *estate, Plan *parent)
aggstate = makeNode(AggState);
node->aggstate = aggstate;
aggstate->agg_done = FALSE;
-
+
/*
* assign node's base id and create expression context
*/
@@ -494,7 +500,7 @@ 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));
@@ -538,8 +544,8 @@ int
ExecCountSlotsAgg(Agg *node)
{
return ExecCountSlotsNode(outerPlan(node)) +
- ExecCountSlotsNode(innerPlan(node)) +
- AGG_NSLOTS;
+ ExecCountSlotsNode(innerPlan(node)) +
+ AGG_NSLOTS;
}
/* ------------------------
@@ -576,7 +582,7 @@ ExecEndAgg(Agg *node)
*/
static Datum
aggGetAttr(TupleTableSlot *slot,
- Aggref *aggref,
+ Aggref * aggref,
bool *isNull)
{
Datum result;
@@ -622,10 +628,11 @@ aggGetAttr(TupleTableSlot *slot,
return (Datum) tempSlot;
}
- result = heap_getattr(heapTuple, /* tuple containing attribute */
- attnum, /* attribute number of desired attribute */
- tuple_type,/* tuple descriptor of tuple */
- isNull); /* return: is attribute null? */
+ result = heap_getattr(heapTuple, /* tuple containing attribute */
+ attnum, /* attribute number of desired
+ * attribute */
+ tuple_type, /* tuple descriptor of tuple */
+ isNull); /* return: is attribute null? */
/* ----------------
* return null if att is null
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-08 08:38:27 +0000