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Do The Right Thing (tm) if asked to cluster a temp table. Previous

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code would cluster, but table would magically lose its tempness.
This commit is contained in:
Tom Lane 2001-01-10 01:12:28 +00:00
parent 353f71a331
commit 412cb388b3
1 changed files with 17 additions and 8 deletions
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25
src/backend/commands/cluster.c
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@ -15,7 +15,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.61 2001/01/01 21:35:00 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.62 2001/01/10 01:12:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -34,8 +34,10 @@
#include "miscadmin.h"
#include "utils/builtins.h"
#include "utils/syscache.h"
#include "utils/temprel.h"
static Oid copy_heap(Oid OIDOldHeap, char *NewName);
static Oid copy_heap(Oid OIDOldHeap, char *NewName, bool istemp);
static void copy_index(Oid OIDOldIndex, Oid OIDNewHeap, char *NewIndexName);
static void rebuildheap(Oid OIDNewHeap, Oid OIDOldHeap, Oid OIDOldIndex);
@ -60,6 +62,7 @@ cluster(char *oldrelname, char *oldindexname)
Relation OldHeap,
OldIndex;
HeapTuple tuple;
bool istemp;
char NewHeapName[NAMEDATALEN];
char NewIndexName[NAMEDATALEN];
char saveoldrelname[NAMEDATALEN];
@ -82,6 +85,8 @@ cluster(char *oldrelname, char *oldindexname)
LockRelation(OldIndex, AccessExclusiveLock);
OIDOldIndex = RelationGetRelid(OldIndex);
istemp = is_temp_rel_name(saveoldrelname);
/*
* Check that index is in fact an index on the given relation
*/
@ -105,7 +110,7 @@ cluster(char *oldrelname, char *oldindexname)
*/
snprintf(NewHeapName, NAMEDATALEN, "temp_%u", OIDOldHeap);
OIDNewHeap = copy_heap(OIDOldHeap, NewHeapName);
OIDNewHeap = copy_heap(OIDOldHeap, NewHeapName, istemp);
/* We do not need CommandCounterIncrement() because copy_heap did it. */
@ -138,7 +143,7 @@ cluster(char *oldrelname, char *oldindexname)
}
static Oid
copy_heap(Oid OIDOldHeap, char *NewName)
copy_heap(Oid OIDOldHeap, char *NewName, bool istemp)
{
TupleDesc OldHeapDesc,
tupdesc;
@ -155,7 +160,7 @@ copy_heap(Oid OIDOldHeap, char *NewName)
tupdesc = CreateTupleDescCopy(OldHeapDesc);
OIDNewHeap = heap_create_with_catalog(NewName, tupdesc,
RELKIND_RELATION, false,
RELKIND_RELATION, istemp,
allowSystemTableMods);
/*
@ -192,9 +197,13 @@ copy_index(Oid OIDOldIndex, Oid OIDNewHeap, char *NewIndexName)
OldIndex = index_open(OIDOldIndex);
/*
* Create a new (temporary) index like the one that's already here.
* To do this I get the info from pg_index, and add a new index with
* a temporary name.
* Create a new index like the old one. To do this I get the info
* from pg_index, and add a new index with a temporary name (that
* will be changed later).
*
* NOTE: index_create will cause the new index to be a temp relation
* if its parent table is, so we don't need to do anything special
* for the temp-table case here.
*/
Old_pg_index_Tuple = SearchSysCache(INDEXRELID,
ObjectIdGetDatum(OIDOldIndex),