database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-07 19:06:32 +03:00
Code Activity

Reimplement temp tables using schemas. The temp table map is history;

Browse Source 
temp table entries in pg_class have the names the user would expect.
This commit is contained in:
Tom Lane
2002-03-31 06:26:32 +00:00
parent 5f4745adf4
commit 3114102521
29 changed files with 596 additions and 670 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
src/include/utils/rel.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: rel.h,v 1.57 2002/03/26 19:16:58 tgl Exp $
* $Id: rel.h,v 1.58 2002/03/31 06:26:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -238,49 +238,15 @@ typedef Relation *RelationPtr;
*/
#define RelationGetIndexStrategy(relation) ((relation)->rd_istrat)
/*
* Handle temp relations
*/
#define PG_TEMP_REL_PREFIX "pg_temp"
#define PG_TEMP_REL_PREFIX_LEN 7
#define is_temp_relname(relname) \
(strncmp(relname, PG_TEMP_REL_PREFIX, PG_TEMP_REL_PREFIX_LEN) == 0)
/*
* RelationGetPhysicalRelationName
*
* 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))
/*
* RelationGetRelationName
*
* Returns the relation's logical name (as seen by the user).
* Returns the rel's name.
*
* 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.
* Note that the name is only unique within the containing namespace.
*/
#define RelationGetRelationName(relation) \
(\
is_temp_relname(RelationGetPhysicalRelationName(relation)) \
? \
get_temp_rel_by_physicalname( \
RelationGetPhysicalRelationName(relation)) \
: \
RelationGetPhysicalRelationName(relation) \
)
(NameStr((relation)->rd_rel->relname))
/*
* RelationGetNamespace
@@ -290,7 +256,4 @@ typedef Relation *RelationPtr;
#define RelationGetNamespace(relation) \
((relation)->rd_rel->relnamespace)
/* added to prevent circular dependency. bjm 1999/11/15 */
extern char *get_temp_rel_by_physicalname(const char *relname);
#endif /* REL_H */