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Small cleanup of temp-table handling. Disallow creation of a non-temp

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table that inherits from a temp table.  Make sure the right things happen
if one creates a temp table, creates another temp that inherits from it,
then renames the first one.  (Previously, system would end up trying to
delete the temp tables in the wrong order.)
This commit is contained in:
Tom Lane
2000-12-22 23:12:07 +00:00
parent 7558da669f
commit 90f42847b5
8 changed files with 42 additions and 28 deletions
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15
src/backend/commands/creatinh.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.68 2000/12/14 00:41:09 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.69 2000/12/22 23:12:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -24,8 +24,9 @@
#include "catalog/pg_type.h"
#include "commands/creatinh.h"
#include "miscadmin.h"
#include "utils/syscache.h"
#include "optimizer/clauses.h"
#include "utils/syscache.h"
#include "utils/temprel.h"
/* ----------------
* local stuff
@ -34,7 +35,7 @@
static int checkAttrExists(const char *attributeName,
const char *attributeType, List *schema);
static List *MergeAttributes(List *schema, List *supers,
static List *MergeAttributes(List *schema, List *supers, bool istemp,
List **supOids, List **supconstr);
static void StoreCatalogInheritance(Oid relationId, List *supers);
static void setRelhassubclassInRelation(Oid relationId, bool relhassubclass);
@ -71,7 +72,7 @@ DefineRelation(CreateStmt *stmt, char relkind)
* including inherited attributes.
* ----------------
*/
schema = MergeAttributes(schema, stmt->inhRelnames,
schema = MergeAttributes(schema, stmt->inhRelnames, stmt->istemp,
&inheritOids, &old_constraints);
numberOfAttributes = length(schema);
@ -283,6 +284,7 @@ change_varattnos_of_a_node(Node *node, const AttrNumber *newattno)
* 'schema' is the column/attribute definition for the table. (It's a list
* of ColumnDef's.) It is destructively changed.
* 'supers' is a list of names (as Value objects) of parent relations.
* 'istemp' is TRUE if we are creating a temp relation.
*
* Output arguments:
* 'supOids' receives an integer list of the OIDs of the parent relations.
@ -311,7 +313,7 @@ change_varattnos_of_a_node(Node *node, const AttrNumber *newattno)
* stud_emp {7:percent}
*/
static List *
MergeAttributes(List *schema, List *supers,
MergeAttributes(List *schema, List *supers, bool istemp,
List **supOids, List **supconstr)
{
List *entry;
@ -378,6 +380,9 @@ MergeAttributes(List *schema, List *supers,
if (relation->rd_rel->relkind != RELKIND_RELATION)
elog(ERROR, "CREATE TABLE: inherited relation \"%s\" is not a table", name);
/* Permanent rels cannot inherit from temporary ones */
if (!istemp && is_temp_rel_name(name))
elog(ERROR, "CREATE TABLE: cannot inherit from temp relation \"%s\"", name);
parentOids = lappendi(parentOids, relation->rd_id);
setRelhassubclassInRelation(relation->rd_id, true);