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synced 2025-06-14 18:42:34 +03:00
Fix explain for union and inheritance. Rename Append structure
members to be clearer. Fix cost computation for these.
This commit is contained in:
Bruce Momjian
@ -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/executor/nodeAppend.c,v 1.12 1998/06/15 19:28:21 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/executor/nodeAppend.c,v 1.13 1998/07/15 14:54:30 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -79,31 +79,29 @@ static bool
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exec_append_initialize_next(Append *node)
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{
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EState *estate;
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AppendState *unionstate;
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AppendState *appendstate;
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TupleTableSlot *result_slot;
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List *rangeTable;
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int whichplan;
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int nplans;
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List *rts;
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List *rtentries;
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List *rtables;
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List *rtable;
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ResTarget *rtentry;
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Index unionrelid;
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/* ----------------
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* get information from the append node
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* ----------------
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*/
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estate = node->plan.state;
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unionstate = node->unionstate;
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result_slot = unionstate->cstate.cs_ResultTupleSlot;
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appendstate = node->appendstate;
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result_slot = appendstate->cstate.cs_ResultTupleSlot;
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rangeTable = estate->es_range_table;
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whichplan = unionstate->as_whichplan;
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nplans = unionstate->as_nplans;
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rts = node->unionrts;
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rtentries = node->unionrtentries;
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whichplan = appendstate->as_whichplan;
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nplans = appendstate->as_nplans;
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rtables = node->unionrtables;
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rtable = node->inheritrtable;
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if (whichplan < 0)
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{
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@ -115,7 +113,7 @@ exec_append_initialize_next(Append *node)
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* at the end of the line by returning FALSE
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* ----------------
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*/
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unionstate->as_whichplan = 0;
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appendstate->as_whichplan = 0;
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return FALSE;
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}
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@ -126,7 +124,7 @@ exec_append_initialize_next(Append *node)
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* the last scan in our list..
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* ----------------
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*/
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unionstate->as_whichplan = nplans - 1;
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appendstate->as_whichplan = nplans - 1;
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return FALSE;
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}
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@ -139,29 +137,27 @@ exec_append_initialize_next(Append *node)
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* of the Append node??? - jolly )
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* ----------------
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*/
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if (node->unionrelid > 0)
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if (node->inheritrelid > 0)
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{
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rtentry = nth(whichplan, rtentries);
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rtentry = nth(whichplan, rtable);
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Assert(rtentry != NULL);
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unionrelid = node->unionrelid;
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rt_store(unionrelid, rangeTable, rtentry);
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rt_store(node->inheritrelid, rangeTable, rtentry);
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}
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else
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estate->es_range_table = nth(whichplan, rts);
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estate->es_range_table = nth(whichplan, rtables);
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if (unionstate->as_junkFilter_list)
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if (appendstate->as_junkFilter_list)
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{
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estate->es_junkFilter =
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(JunkFilter *) nth(whichplan,
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unionstate->as_junkFilter_list);
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appendstate->as_junkFilter_list);
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}
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if (unionstate->as_result_relation_info_list)
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if (appendstate->as_result_relation_info_list)
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{
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estate->es_result_relation_info =
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(RelationInfo *) nth(whichplan,
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unionstate->as_result_relation_info_list);
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appendstate->as_result_relation_info_list);
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}
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result_slot->ttc_whichplan = whichplan;
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@ -187,11 +183,11 @@ exec_append_initialize_next(Append *node)
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bool
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ExecInitAppend(Append *node, EState *estate, Plan *parent)
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{
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AppendState *unionstate;
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AppendState *appendstate;
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int nplans;
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List *resultList = NULL;
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List *rtentries;
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List *unionplans;
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List *rtable;
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List *appendplans;
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bool *initialized;
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int i;
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Plan *initNode;
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@ -205,9 +201,9 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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*/
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node->plan.state = estate;
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unionplans = node->unionplans;
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nplans = length(unionplans);
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rtentries = node->unionrtentries;
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appendplans = node->appendplans;
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nplans = length(appendplans);
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rtable = node->inheritrtable;
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CXT1_printf("ExecInitAppend: context is %d\n", CurrentMemoryContext);
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initialized = (bool *) palloc(nplans * sizeof(bool));
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@ -216,13 +212,13 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* create new AppendState for our append node
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* ----------------
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*/
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unionstate = makeNode(AppendState);
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unionstate->as_whichplan = 0;
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unionstate->as_nplans = nplans;
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unionstate->as_initialized = initialized;
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unionstate->as_rtentries = rtentries;
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appendstate = makeNode(AppendState);
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appendstate->as_whichplan = 0;
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appendstate->as_nplans = nplans;
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appendstate->as_initialized = initialized;
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appendstate->as_rtentries = rtable;
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node->unionstate = unionstate;
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node->appendstate = appendstate;
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/* ----------------
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* Miscellanious initialization
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@ -234,7 +230,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* never call ExecQual or ExecTargetList.
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* ----------------
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*/
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ExecAssignNodeBaseInfo(estate, &unionstate->cstate, parent);
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ExecAssignNodeBaseInfo(estate, &appendstate->cstate, parent);
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#define APPEND_NSLOTS 1
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/* ----------------
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@ -242,7 +238,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* to tuples, so we have to initialize them..
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* ----------------
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*/
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ExecInitResultTupleSlot(estate, &unionstate->cstate);
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ExecInitResultTupleSlot(estate, &appendstate->cstate);
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/*
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* If the inherits rtentry is the result relation, we have to make a
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@ -252,12 +248,12 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* e.g. replace p (age = p.age + 1) from p in person*
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*/
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if ((es_rri != (RelationInfo *) NULL) &&
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(node->unionrelid == es_rri->ri_RangeTableIndex))
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(node->inheritrelid == es_rri->ri_RangeTableIndex))
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{
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RelationInfo *rri;
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List *rtentryP;
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foreach(rtentryP, rtentries)
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foreach(rtentryP, rtable)
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{
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Oid reloid;
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RangeTblEntry *rtentry = lfirst(rtentryP);
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@ -273,7 +269,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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resultList = lcons(rri, resultList);
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ExecOpenIndices(reloid, rri);
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}
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unionstate->as_result_relation_info_list = resultList;
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appendstate->as_result_relation_info_list = resultList;
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}
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/* ----------------
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* call ExecInitNode on each of the plans in our list
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@ -294,10 +290,10 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* since it may use the range table.
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* ----------------
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*/
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unionstate->as_whichplan = i;
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appendstate->as_whichplan = i;
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exec_append_initialize_next(node);
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initNode = (Plan *) nth(i, unionplans);
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initNode = (Plan *) nth(i, appendplans);
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initialized[i] = ExecInitNode(initNode, estate, (Plan *) node);
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/* ---------------
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@ -308,7 +304,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* ---------------
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*/
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if ((es_rri != (RelationInfo *) NULL) &&
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(node->unionrelid == es_rri->ri_RangeTableIndex))
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(node->inheritrelid == es_rri->ri_RangeTableIndex))
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{
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targetList = initNode->targetlist;
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@ -317,7 +313,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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}
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}
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unionstate->as_junkFilter_list = junkList;
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appendstate->as_junkFilter_list = junkList;
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if (junkList != NIL)
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estate->es_junkFilter = (JunkFilter *) lfirst(junkList);
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@ -325,17 +321,17 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* initialize the return type from the appropriate subplan.
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* ----------------
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*/
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initNode = (Plan *) nth(0, unionplans);
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ExecAssignResultType(&unionstate->cstate,
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initNode = (Plan *) nth(0, appendplans);
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ExecAssignResultType(&appendstate->cstate,
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/* ExecGetExecTupDesc(initNode), */
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ExecGetTupType(initNode));
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unionstate->cstate.cs_ProjInfo = NULL;
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appendstate->cstate.cs_ProjInfo = NULL;
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/* ----------------
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* return the result from the first subplan's initialization
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* ----------------
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*/
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unionstate->as_whichplan = 0;
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appendstate->as_whichplan = 0;
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exec_append_initialize_next(node);
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#if 0
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result = (List *) initialized[0];
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@ -347,10 +343,10 @@ int
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ExecCountSlotsAppend(Append *node)
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{
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List *plan;
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List *unionplans = node->unionplans;
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List *appendplans = node->appendplans;
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int nSlots = 0;
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foreach(plan, unionplans)
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foreach(plan, appendplans)
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nSlots += ExecCountSlotsNode((Plan *) lfirst(plan));
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return nSlots + APPEND_NSLOTS;
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}
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@ -367,10 +363,10 @@ TupleTableSlot *
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ExecProcAppend(Append *node)
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{
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EState *estate;
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AppendState *unionstate;
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AppendState *appendstate;
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int whichplan;
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List *unionplans;
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List *appendplans;
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Plan *subnode;
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TupleTableSlot *result;
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TupleTableSlot *result_slot;
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@ -380,19 +376,19 @@ ExecProcAppend(Append *node)
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* get information from the node
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* ----------------
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*/
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unionstate = node->unionstate;
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appendstate = node->appendstate;
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estate = node->plan.state;
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direction = estate->es_direction;
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unionplans = node->unionplans;
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whichplan = unionstate->as_whichplan;
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result_slot = unionstate->cstate.cs_ResultTupleSlot;
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appendplans = node->appendplans;
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whichplan = appendstate->as_whichplan;
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result_slot = appendstate->cstate.cs_ResultTupleSlot;
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/* ----------------
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* figure out which subplan we are currently processing
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* ----------------
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*/
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subnode = (Plan *) nth(whichplan, unionplans);
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subnode = (Plan *) nth(whichplan, appendplans);
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if (subnode == NULL)
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elog(DEBUG, "ExecProcAppend: subnode is NULL");
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@ -421,12 +417,12 @@ ExecProcAppend(Append *node)
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* direction and try processing again (recursively)
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* ----------------
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*/
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whichplan = unionstate->as_whichplan;
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whichplan = appendstate->as_whichplan;
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if (ScanDirectionIsForward(direction))
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unionstate->as_whichplan = whichplan + 1;
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appendstate->as_whichplan = whichplan + 1;
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else
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unionstate->as_whichplan = whichplan - 1;
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appendstate->as_whichplan = whichplan - 1;
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/* ----------------
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* return something from next node or an empty slot
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@ -454,9 +450,9 @@ ExecProcAppend(Append *node)
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void
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ExecEndAppend(Append *node)
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{
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AppendState *unionstate;
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AppendState *appendstate;
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int nplans;
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List *unionplans;
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List *appendplans;
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bool *initialized;
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int i;
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List *resultRelationInfoList;
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@ -466,10 +462,10 @@ ExecEndAppend(Append *node)
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* get information from the node
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* ----------------
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*/
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unionstate = node->unionstate;
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unionplans = node->unionplans;
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nplans = unionstate->as_nplans;
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initialized = unionstate->as_initialized;
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appendstate = node->appendstate;
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appendplans = node->appendplans;
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nplans = appendstate->as_nplans;
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initialized = appendstate->as_initialized;
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/* ----------------
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* shut down each of the subscans
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@ -478,14 +474,14 @@ ExecEndAppend(Append *node)
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for (i = 0; i < nplans; i++)
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{
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if (initialized[i] == TRUE)
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ExecEndNode((Plan *) nth(i, unionplans), (Plan *) node);
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ExecEndNode((Plan *) nth(i, appendplans), (Plan *) node);
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}
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/* ----------------
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* close out the different result relations
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* ----------------
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*/
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resultRelationInfoList = unionstate->as_result_relation_info_list;
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resultRelationInfoList = appendstate->as_result_relation_info_list;
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while (resultRelationInfoList != NIL)
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{
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Relation resultRelationDesc;
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@ -496,11 +492,11 @@ ExecEndAppend(Append *node)
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pfree(resultRelationInfo);
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resultRelationInfoList = lnext(resultRelationInfoList);
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}
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if (unionstate->as_result_relation_info_list)
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pfree(unionstate->as_result_relation_info_list);
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if (appendstate->as_result_relation_info_list)
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pfree(appendstate->as_result_relation_info_list);
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/*
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* XXX should free unionstate->as_rtentries and
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* unionstate->as_junkfilter_list here
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* XXX should free appendstate->as_rtentries and
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* appendstate->as_junkfilter_list here
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*/
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}
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