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Add DOMAIN support. Includes manual pages and regression tests, from

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Rod Taylor.
This commit is contained in:
Bruce Momjian
2002-03-19 02:18:25 +00:00
parent 525b19399c
commit d3788c3305
36 changed files with 1805 additions and 286 deletions
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52
src/backend/optimizer/prep/preptlist.c
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@@ -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 1.48 2002/03/07 16:35:35 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/preptlist.c,v 1.49 2002/03/19 02:18:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -355,8 +355,6 @@ build_column_default(Relation rel, int attrno)
Form_pg_attribute att_tup = rd_att->attrs[attrno - 1];
Oid atttype = att_tup->atttypid;
int32 atttypmod = att_tup->atttypmod;
bool hasdefault;
Datum typedefault;
int16 typlen;
bool typbyval;
Node *expr;
@@ -392,7 +390,7 @@ build_column_default(Relation rel, int attrno)
if (type_id != atttype)
{
expr = CoerceTargetExpr(NULL, expr, type_id,
atttype, atttypmod);
getBaseType(atttype), atttypmod);
/*
* This really shouldn't fail; should have checked the
@@ -430,41 +428,53 @@ build_column_default(Relation rel, int attrno)
* element type is, and the element type's default is irrelevant
* too.
*/
hasdefault = false;
typedefault = (Datum) 0;
typlen = sizeof(Oid);
typbyval = true;
expr = (Node *) makeConst(atttype,
typlen,
(Datum) 0,
true,
typbyval,
false, /* not a set */
false);
}
else
{
#ifdef _DROP_COLUMN_HACK__
if (COLUMN_IS_DROPPED(att_tup))
{
hasdefault = false;
typedefault = (Datum) 0;
expr = (Node *) makeConst(atttype,
typlen,
(Datum) 0,
true,
typbyval,
false, /* not a set */
false);
}
else
#endif /* _DROP_COLUMN_HACK__ */
hasdefault = get_typdefault(atttype, &typedefault);
expr = get_typdefault(atttype, atttypmod);
if (expr == NULL) {
expr = (Node *) makeConst(atttype,
typlen,
(Datum) 0,
true,
typbyval,
false, /* not a set */
false);
}
get_typlenbyval(atttype, &typlen, &typbyval);
}
expr = (Node *) makeConst(atttype,
typlen,
typedefault,
!hasdefault,
typbyval,
false, /* not a set */
false);
/*
* If the column is a fixed-length type, it may need a length coercion
* as well as a type coercion. But NULLs don't need that.
* as well as a type coercion, as well as direction to the final type.
*/
if (hasdefault)
expr = coerce_type_typmod(NULL, expr,
atttype, atttypmod);
expr = coerce_type_typmod(NULL, expr,
atttype, atttypmod);
return expr;
}