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Create 'default_tablespace' GUC variable that supplies a TABLESPACE

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clause implicitly whenever one is not given explicitly.  Remove concept
of a schema having an associated tablespace, and simplify the rules for
selecting a default tablespace for a table or index.  It's now just
(a) explicit TABLESPACE clause; (b) default_tablespace if that's not an
empty string; (c) database's default.  This will allow pg_dump to use
SET commands instead of tablespace clauses to determine object locations
(but I didn't actually make it do so).  All per recent discussions.
This commit is contained in:
Tom Lane
2004-11-05 19:17:13 +00:00
parent 0ed3c7665e
commit 98e8b48053
37 changed files with 370 additions and 585 deletions
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58
src/backend/utils/cache/lsyscache.c vendored
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.117 2004/10/20 16:04:49 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.118 2004/11/05 19:16:14 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -985,34 +985,6 @@ get_rel_namespace(Oid relid)
return InvalidOid;
}
/*
* get_rel_tablespace
* Returns the pg_tablespace OID associated with a given relation.
*
* Note: failure return is InvalidOid, which cannot be distinguished from
* "default tablespace for this database", but that seems OK.
*/
Oid
get_rel_tablespace(Oid relid)
{
HeapTuple tp;
tp = SearchSysCache(RELOID,
ObjectIdGetDatum(relid),
0, 0, 0);
if (HeapTupleIsValid(tp))
{
Form_pg_class reltup = (Form_pg_class) GETSTRUCT(tp);
Oid result;
result = reltup->reltablespace;
ReleaseSysCache(tp);
return result;
}
else
return InvalidOid;
}
/*
* get_rel_type_id
*
@ -2044,34 +2016,6 @@ get_namespace_name(Oid nspid)
return NULL;
}
/*
* get_namespace_tablespace
* Returns the default tablespace of a given namespace
*
* Note: failure return is InvalidOid, which cannot be distinguished from
* "default tablespace for this database", but that seems OK.
*/
Oid
get_namespace_tablespace(Oid nspid)
{
HeapTuple tp;
tp = SearchSysCache(NAMESPACEOID,
ObjectIdGetDatum(nspid),
0, 0, 0);
if (HeapTupleIsValid(tp))
{
Form_pg_namespace nsptup = (Form_pg_namespace) GETSTRUCT(tp);
Oid result;
result = nsptup->nsptablespace;
ReleaseSysCache(tp);
return result;
}
else
return InvalidOid;
}
/* ---------- PG_SHADOW CACHE ---------- */
/*