database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Fix the problem that creating a user-defined type named _foo, followed by one

Browse Source 
named foo, would work but the other ordering would not.  If a user-specified
type or table name collides with an existing auto-generated array name, just
rename the array type out of the way by prepending more underscores.  This
should not create any backward-compatibility issues, since the cases in which
this will happen would have failed outright in prior releases.

Also fix an oversight in the arrays-of-composites patch: ALTER TABLE RENAME
renamed the table's rowtype but not its array type.
This commit is contained in:
Tom Lane
2007-05-12 00:55:00 +00:00
parent d8326119c8
commit 9aa3c782c9
8 changed files with 251 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/backend/commands/tablecmds.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.221 2007/05/11 20:16:36 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.222 2007/05/12 00:54:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1626,6 +1626,7 @@ renamerel(Oid myrelid, const char *newrelname)
Relation targetrelation;
Relation relrelation; /* for RELATION relation */
HeapTuple reltup;
Form_pg_class relform;
Oid namespaceId;
char *oldrelname;
char relkind;
@ -1655,10 +1656,11 @@ renamerel(Oid myrelid, const char *newrelname)
relrelation = heap_open(RelationRelationId, RowExclusiveLock);
reltup = SearchSysCacheCopy(RELOID,
PointerGetDatum(myrelid),
ObjectIdGetDatum(myrelid),
0, 0, 0);
if (!HeapTupleIsValid(reltup)) /* shouldn't happen */
elog(ERROR, "cache lookup failed for relation %u", myrelid);
relform = (Form_pg_class) GETSTRUCT(reltup);
if (get_relname_relid(newrelname, namespaceId) != InvalidOid)
ereport(ERROR,
@ -1670,7 +1672,7 @@ renamerel(Oid myrelid, const char *newrelname)
* Update pg_class tuple with new relname. (Scribbling on reltup is OK
* because it's a copy...)
*/
namestrcpy(&(((Form_pg_class) GETSTRUCT(reltup))->relname), newrelname);
namestrcpy(&(relform->relname), newrelname);
simple_heap_update(relrelation, &reltup->t_self, reltup);
@ -1683,8 +1685,8 @@ renamerel(Oid myrelid, const char *newrelname)
/*
* Also rename the associated type, if any.
*/
if (relkind != RELKIND_INDEX)
TypeRename(oldrelname, namespaceId, newrelname);
if (OidIsValid(targetrelation->rd_rel->reltype))
TypeRename(targetrelation->rd_rel->reltype, newrelname, namespaceId);
/*
* Close rel, but keep exclusive lock!