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Support for subselects.

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(Have to re-visit readfuncs.c)
This commit is contained in:
Vadim B. Mikheev
1998-02-13 03:27:47 +00:00
parent 1a105cefbd
commit dc892fd390
4 changed files with 88 additions and 5 deletions
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32
src/backend/nodes/copyfuncs.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.37 1998/02/10 04:00:44 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.38 1998/02/13 03:27:42 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -79,6 +79,8 @@ listCopy(List *list)
static void
CopyPlanFields(Plan *from, Plan *newnode)
{
extern List *SS_pull_subplan (void *expr);
newnode->cost = from->cost;
newnode->plan_size = from->plan_size;
newnode->plan_width = from->plan_width;
@ -88,6 +90,15 @@ CopyPlanFields(Plan *from, Plan *newnode)
newnode->qual = copyObject(from->qual);
newnode->lefttree = copyObject(from->lefttree);
newnode->righttree = copyObject(from->righttree);
newnode->extParam = listCopy (from->extParam);
newnode->locParam = listCopy (from->locParam);
newnode->chgParam = listCopy (from->chgParam);
Node_Copy(from, newnode, initPlan);
if ( from->subPlan != NULL )
newnode->subPlan = SS_pull_subplan (newnode->qual);
else
newnode->subPlan = NULL;
newnode->nParamExec = from->nParamExec;
}
/* ----------------
@ -575,6 +586,22 @@ _copyHash(Hash *from)
return newnode;
}
static SubPlan *
_copySubPlan(SubPlan *from)
{
SubPlan *newnode = makeNode(SubPlan);
Node_Copy(from, newnode, plan);
newnode->plan_id = from->plan_id;
Node_Copy(from, newnode, rtable);
newnode->setParam = listCopy (from->setParam);
newnode->parParam = listCopy (from->parParam);
Node_Copy(from, newnode, sublink);
newnode->shutdown = from->shutdown;
return newnode;
}
/* ****************************************************************
* primnodes.h copy functions
* ****************************************************************
@ -1661,6 +1688,9 @@ copyObject(void *from)
case T_Hash:
retval = _copyHash(from);
break;
case T_SubPlan:
retval = _copySubPlan(from);
break;
/*
* PRIMITIVE NODES