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Determine the set of constraints applied to a domain at executor

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startup, not in the parser; this allows ALTER DOMAIN to work correctly
with domain constraint operations stored in rules.  Rod Taylor;
code review by Tom Lane.
This commit is contained in:
Tom Lane
2003-02-03 21:15:45 +00:00
parent 464598b637
commit 3752e85bad
24 changed files with 524 additions and 339 deletions
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10
src/backend/optimizer/path/clausesel.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.56 2003/01/28 22:13:29 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.57 2003/02/03 21:15:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -540,6 +540,14 @@ clause_selectivity(Query *root,
varRelid,
jointype);
}
else if (IsA(clause, CoerceToDomain))
{
/* Not sure this case is needed, but it can't hurt */
s1 = clause_selectivity(root,
(Node *) ((CoerceToDomain *) clause)->arg,
varRelid,
jointype);
}
#ifdef SELECTIVITY_DEBUG
elog(DEBUG3, "clause_selectivity: s1 %f", s1);

9
src/backend/optimizer/prep/preptlist.c
View File

@@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/preptlist.c,v 1.59 2002/12/12 15:49:32 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/preptlist.c,v 1.60 2003/02/03 21:15:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -185,9 +185,10 @@ expand_targetlist(List *tlist, int command_type,
true, /* isnull */
att_tup->attbyval);
if (!att_tup->attisdropped)
new_expr = coerce_type_constraints(new_expr,
atttype,
COERCE_IMPLICIT_CAST);
new_expr = coerce_to_domain(new_expr,
InvalidOid,
atttype,
COERCE_IMPLICIT_CAST);
break;
case CMD_UPDATE:
/* Insert NULLs for dropped columns */

21
src/backend/optimizer/util/clauses.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.125 2003/01/20 18:54:54 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.126 2003/02/03 21:15:44 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -2030,7 +2030,7 @@ expression_tree_walker(Node *node,
case T_Var:
case T_Const:
case T_Param:
case T_ConstraintTestValue:
case T_CoerceToDomainValue:
case T_RangeTblRef:
/* primitive node types with no subnodes */
break;
@@ -2148,10 +2148,8 @@ expression_tree_walker(Node *node,
return walker(((NullTest *) node)->arg, context);
case T_BooleanTest:
return walker(((BooleanTest *) node)->arg, context);
case T_ConstraintTest:
if (walker(((ConstraintTest *) node)->arg, context))
return true;
return walker(((ConstraintTest *) node)->check_expr, context);
case T_CoerceToDomain:
return walker(((CoerceToDomain *) node)->arg, context);
case T_TargetEntry:
return walker(((TargetEntry *) node)->expr, context);
case T_Query:
@@ -2374,7 +2372,7 @@ expression_tree_mutator(Node *node,
case T_Var:
case T_Const:
case T_Param:
case T_ConstraintTestValue:
case T_CoerceToDomainValue:
case T_RangeTblRef:
/* primitive node types with no subnodes */
return (Node *) copyObject(node);
@@ -2538,14 +2536,13 @@ expression_tree_mutator(Node *node,
return (Node *) newnode;
}
break;
case T_ConstraintTest:
case T_CoerceToDomain:
{
ConstraintTest *ctest = (ConstraintTest *) node;
ConstraintTest *newnode;
CoerceToDomain *ctest = (CoerceToDomain *) node;
CoerceToDomain *newnode;
FLATCOPY(newnode, ctest, ConstraintTest);
FLATCOPY(newnode, ctest, CoerceToDomain);
MUTATE(newnode->arg, ctest->arg, Expr *);
MUTATE(newnode->check_expr, ctest->check_expr, Expr *);
return (Node *) newnode;
}
break;