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This commit is contained in:
Tom Lane 2000-12-23 19:55:16 +00:00
parent 7df721af0e
commit e58badfbe7
1 changed files with 16 additions and 4 deletions
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20
src/include/utils/rel.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: rel.h,v 1.42 2000/11/08 22:10:02 tgl Exp $
* $Id: rel.h,v 1.43 2000/12/23 19:55:16 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -185,12 +185,16 @@ typedef Relation *RelationPtr;
/*
* RelationGetRelationName
*
* Returns a Relation Name
* Returns the relation's logical name (as seen by the user).
*
* If the rel is a temp rel, the temp name will be returned. Therefore,
* this name is not unique. But it is the name to use in heap_openr(),
* for example.
*/
#define RelationGetRelationName(relation) \
(\
(strncmp(RelationGetPhysicalRelationName(relation), \
"pg_temp.", strlen("pg_temp.")) != 0) \
"pg_temp.", 8) != 0) \
? \
RelationGetPhysicalRelationName(relation) \
: \
@ -202,7 +206,15 @@ typedef Relation *RelationPtr;
/*
* RelationGetPhysicalRelationName
*
* Returns a Relation Name
* Returns the rel's physical name, ie, the name appearing in pg_class.
*
* While this name is unique across all rels in the database, it is not
* necessarily useful for accessing the rel, since a temp table of the
* same name might mask the rel. It is useful mainly for determining if
* the rel is a shared system rel or not.
*
* The macro is rather unfortunately named, since the pg_class name no longer
* has anything to do with the file name used for physical storage of the rel.
*/
#define RelationGetPhysicalRelationName(relation) \
(NameStr((relation)->rd_rel->relname))