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Remove 'func_tlist' from Func expression nodes, likewise 'param_tlist'

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from Param nodes, per discussion a few days ago on pghackers.  Add new
expression node type FieldSelect that implements the functionality where
it's actually needed.  Clean up some other unused fields in Func nodes
as well.
NOTE: initdb forced due to change in stored expression trees for rules.
This commit is contained in:
Tom Lane
2000-08-08 15:43:12 +00:00
parent 8fc32374be
commit 62e29fe2e7
31 changed files with 378 additions and 476 deletions
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18
src/backend/optimizer/util/clauses.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.69 2000/07/12 02:37:11 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.70 2000/08/08 15:41:53 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -910,9 +910,7 @@ CommuteClause(Expr *clause)
commu = makeOper(heapTup->t_data->t_oid,
commuTup->oprcode,
commuTup->oprresult,
((Oper *) clause->oper)->opsize,
NULL);
commuTup->oprresult);
/*
* re-form the clause in-place!
@@ -1596,6 +1594,8 @@ bool
return true;
}
break;
case T_FieldSelect:
return walker(((FieldSelect *) node)->arg, context);
case T_RelabelType:
return walker(((RelabelType *) node)->arg, context);
case T_CaseExpr:
@@ -1824,6 +1824,16 @@ Node *
return (Node *) newnode;
}
break;
case T_FieldSelect:
{
FieldSelect *fselect = (FieldSelect *) node;
FieldSelect *newnode;
FLATCOPY(newnode, fselect, FieldSelect);
MUTATE(newnode->arg, fselect->arg, Node *);
return (Node *) newnode;
}
break;
case T_RelabelType:
{
RelabelType *relabel = (RelabelType *) node;