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Add attisinherited column to pg_attribute; use it to guard against

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column additions, deletions, and renames that would let a child table
get out of sync with its parent.  Patch by Alvaro Herrera, with some
kibitzing by Tom Lane.
This commit is contained in:
Tom Lane
2002-08-30 19:23:20 +00:00
parent 96fd7192e7
commit e2d156fa6e
18 changed files with 488 additions and 326 deletions
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14
src/backend/access/common/tupdesc.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.86 2002/08/29 00:17:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.87 2002/08/30 19:23:18 tgl Exp $
*
* NOTES
* some of the executor utility code such as "ExecTypeFromTL" should be
@ -231,6 +231,9 @@ FreeTupleDesc(TupleDesc tupdesc)
}
/*
* Compare two TupleDesc structures for logical equality
*/
bool
equalTupleDescs(TupleDesc tupdesc1, TupleDesc tupdesc2)
{
@ -264,8 +267,12 @@ equalTupleDescs(TupleDesc tupdesc1, TupleDesc tupdesc2)
return false;
if (attr1->attnotnull != attr2->attnotnull)
return false;
if (attr1->atthasdef != attr2->atthasdef)
return false;
if (attr1->attisdropped != attr2->attisdropped)
return false;
if (attr1->attisinherited != attr2->attisinherited)
return false;
}
if (tupdesc1->constr != NULL)
{
@ -389,6 +396,7 @@ TupleDescInitEntry(TupleDesc desc,
att->attnotnull = false;
att->atthasdef = false;
att->attisdropped = false;
att->attisinherited = false;
tuple = SearchSysCache(TYPEOID,
ObjectIdGetDatum(oidtypeid),
@ -514,7 +522,7 @@ BuildDescForRelation(List *schema)
typenameTypeId(entry->typename),
atttypmod, attdim, attisset);
/* This is for constraints */
/* Fill in additional stuff not handled by TupleDescInitEntry */
if (entry->is_not_null)
constr->has_not_null = true;
desc->attrs[attnum - 1]->attnotnull = entry->is_not_null;
@ -533,7 +541,9 @@ BuildDescForRelation(List *schema)
desc->attrs[attnum - 1]->atthasdef = true;
}
desc->attrs[attnum - 1]->attisinherited = entry->is_inherited;
}
if (constr->has_not_null || ndef > 0)
{
desc->constr = constr;