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Code review for transaction-safe-TRUNCATE patch: minor cleanups.

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This commit is contained in:
Tom Lane 2002-12-30 19:45:17 +00:00
parent a03c0d93d5
commit 896bd121cc
3 changed files with 19 additions and 8 deletions
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3
doc/src/sgml/release.sgml
View File

@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.173 2002/12/20 00:24:00 momjian Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.174 2002/12/30 19:45:11 tgl Exp $
-->
<appendix id="release">
@ -29,6 +29,7 @@ Information schema
Domains now support CHECK constraints
psql backslash commands for listing conversions, casts, and schemas
TRUNCATE TABLE is transaction-safe
CLUSTER can re-cluster a previously clustered table, or all such tables
Statement-level triggers
System can use either hash- or sort-based strategy for grouped aggregation
ON COMMIT options for temp tables

14
src/backend/commands/cluster.c
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.103 2002/12/30 18:42:13 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.104 2002/12/30 19:45:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -26,7 +26,6 @@
#include "catalog/index.h"
#include "catalog/indexing.h"
#include "catalog/namespace.h"
#include "catalog/pg_constraint.h"
#include "commands/cluster.h"
#include "commands/tablecmds.h"
#include "miscadmin.h"
@ -111,9 +110,9 @@ cluster(ClusterStmt *stmt)
RelToCluster rvtc;
/* Find and lock the table */
tableOid = RangeVarGetRelid(stmt->relation, false);
rel = heap_openrv(stmt->relation, AccessExclusiveLock);
rel = heap_open(tableOid, AccessExclusiveLock);
tableOid = RelationGetRelid(rel);
/* Check permissions */
if (!check_cluster_permitted(tableOid))
@ -325,6 +324,13 @@ cluster_rel(RelToCluster *rvtc, bool recheck)
elog(ERROR, "CLUSTER: cannot cluster system relation \"%s\"",
RelationGetRelationName(OldHeap));
/*
* Don't allow cluster on temp tables of other backends ... their
* local buffer manager is not going to cope.
*/
if (isOtherTempNamespace(RelationGetNamespace(OldHeap)))
elog(ERROR, "CLUSTER cannot be used on temp tables of other processes");
/* Drop relcache refcnt on OldIndex, but keep lock */
index_close(OldIndex);

10
src/backend/commands/tablecmds.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.63 2002/12/30 18:42:14 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.64 2002/12/30 19:45:17 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -423,8 +423,7 @@ TruncateRelation(const RangeVar *relation)
Form_pg_constraint con = (Form_pg_constraint) GETSTRUCT(tuple);
if (con->contype == 'f' && con->conrelid != relid)
elog(ERROR, "TRUNCATE cannot be used as table %s references "
"this one via foreign key constraint %s",
elog(ERROR, "TRUNCATE cannot be used as table %s references this one via foreign key constraint %s",
get_rel_name(con->conrelid),
NameStr(con->conname));
}
@ -439,6 +438,11 @@ TruncateRelation(const RangeVar *relation)
rebuild_relation(rel, InvalidOid);
/* NB: rebuild_relation does heap_close() */
/*
* You might think we need to truncate the rel's toast table here too,
* but actually we don't; it will have been rebuilt in an empty state.
*/
}
/*----------