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Commit3498ea8

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author
Hiroshi Inoue
committed
Improve the following.
 =# create table t (id int4 unique);NOTICE: CREATE TABLE/UNIQUE will create implicit index 't_id_key' for table 't' =# begin; query: drop table t;NOTICE: Caution: DROP TABLE cannot be rolled back, so don't abort nowNOTICE: Caution: DROP INDEX cannot be rolled back, so don't abort now =# rollback; =# drop table t;NOTICE: mdopen: couldn't open t: No such file or directoryNOTICE: RelationIdBuildRelation: smgropen(t): No such file or directoryNOTICE: mdopen: couldn't open t: No such file or directoryNOTICE: mdopen: couldn't open t: No such file or directoryNOTICE: mdopen: couldn't open t_id_key: No such file or directoryNOTICE: RelationIdBuildRelation: smgropen(t_id_key): No such file or directoryNOTICE: mdopen: couldn't open t: No such file or directoryNOTICE: RelationIdBuildRelation: smgropen(t): No such file or directoryNOTICE: mdopen: couldn't open t: No such file or directoryERROR: cannot open relation t
1 parent67cd018 commit3498ea8

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‎src/backend/utils/cache/relcache.c

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.109 2000/08/06 04:39:03 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.110 2000/08/30 08:48:55 inoue Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -1595,7 +1595,10 @@ RelationClearRelation(Relation relation, bool rebuildIt)
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* this is kind of expensive, but I think we must do it in case
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* relation has been truncated...
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*/
1598-
relation->rd_nblocks=RelationGetNumberOfBlocks(relation);
1598+
if (relation->rd_unlinked)
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relation->rd_nblocks=0;
1600+
else
1601+
relation->rd_nblocks=RelationGetNumberOfBlocks(relation);
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if (relDescChanged&& !RelationHasReferenceCountZero(relation))
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elog(ERROR,"RelationClearRelation: relation %u modified while in use",

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