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postgresql/src/include/utils/lsyscache.h

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More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* lsyscache.h
Move get_attdisbursion to lsyscache. Clean up get_typdefault.
1999-08-09 05:13:31 +02:00
* Convenience routines for common queries in the system catalog cache.
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
2001-01-24 20:43:33 +01:00
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
*
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
* $Id: lsyscache.h,v 1.31 2001/05/07 00:43:26 tgl Exp $
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#ifndef LSYSCACHE_H
#define LSYSCACHE_H
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
Change #include's to use <> and "" as appropriate.
1999-07-16 01:04:24 +02:00
#include "access/htup.h"
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
Clean up handling of variable-free qual clauses. System now does the right thing with variable-free clauses that contain noncachable functions, such as 'WHERE random() < 0.5' --- these are evaluated once per potential output tuple. Expressions that contain only Params are now candidates to be indexscan quals --- for example, 'var = ($1 + 1)' can now be indexed. Cope with RelabelType nodes atop potential indexscan variables --- this oversight prevents 7.0.* from recognizing some potentially indexscanable situations.
2000-08-13 04:50:35 +02:00
extern bool op_class(Oid opno, Oid opclass, Oid amopid);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern char *get_attname(Oid relid, AttrNumber attnum);
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
extern AttrNumber get_attnum(Oid relid, char *attname);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern Oid get_atttype(Oid relid, AttrNumber attnum);
extern bool get_attisset(Oid relid, char *attname);
Change atttypmod from int16 to int32, for Thomas.
1998-07-12 23:29:40 +02:00
extern int32 get_atttypmod(Oid relid, AttrNumber attnum);
Clean up handling of variable-free qual clauses. System now does the right thing with variable-free clauses that contain noncachable functions, such as 'WHERE random() < 0.5' --- these are evaluated once per potential output tuple. Expressions that contain only Params are now candidates to be indexscan quals --- for example, 'var = ($1 + 1)' can now be indexed. Cope with RelabelType nodes atop potential indexscan variables --- this oversight prevents 7.0.* from recognizing some potentially indexscanable situations.
2000-08-13 04:50:35 +02:00
extern RegProcedure get_opcode(Oid opno);
extern char *get_opname(Oid opno);
extern bool op_mergejoinable(Oid opno, Oid ltype, Oid rtype,
Used modified version of indent that understands over 100 typedefs.
1997-09-08 23:56:23 +02:00
Oid *leftOp, Oid *rightOp);
Clean up handling of variable-free qual clauses. System now does the right thing with variable-free clauses that contain noncachable functions, such as 'WHERE random() < 0.5' --- these are evaluated once per potential output tuple. Expressions that contain only Params are now candidates to be indexscan quals --- for example, 'var = ($1 + 1)' can now be indexed. Cope with RelabelType nodes atop potential indexscan variables --- this oversight prevents 7.0.* from recognizing some potentially indexscanable situations.
2000-08-13 04:50:35 +02:00
extern Oid op_hashjoinable(Oid opno, Oid ltype, Oid rtype);
extern bool op_iscachable(Oid opno);
extern Oid get_commutator(Oid opno);
extern Oid get_negator(Oid opno);
extern RegProcedure get_oprrest(Oid opno);
extern RegProcedure get_oprjoin(Oid opno);
Add get_func_rettype() to general-use lsyscache routines, since it's now needed in both optimizer and parser.
1999-08-16 04:06:25 +02:00
extern Oid get_func_rettype(Oid funcid);
Clean up handling of variable-free qual clauses. System now does the right thing with variable-free clauses that contain noncachable functions, such as 'WHERE random() < 0.5' --- these are evaluated once per potential output tuple. Expressions that contain only Params are now candidates to be indexscan quals --- for example, 'var = ($1 + 1)' can now be indexed. Cope with RelabelType nodes atop potential indexscan variables --- this oversight prevents 7.0.* from recognizing some potentially indexscanable situations.
2000-08-13 04:50:35 +02:00
extern bool func_iscachable(Oid funcid);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern char *get_rel_name(Oid relid);
extern int16 get_typlen(Oid typid);
extern bool get_typbyval(Oid typid);
Change SearchSysCache coding conventions so that a reference count is maintained for each cache entry. A cache entry will not be freed until the matching ReleaseSysCache call has been executed. This eliminates worries about cache entries getting dropped while still in use. See my posting to pg-hackers of even date for more info.
2000-11-16 23:30:52 +01:00
extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval);
Revise handling of oldstyle/newstyle functions per recent discussions in pghackers list. Support for oldstyle internal functions is gone (no longer needed, since conversion is complete) and pg_language entry 'internal' now implies newstyle call convention. pg_language entry 'newC' is gone; both old and newstyle dynamically loaded C functions are now called language 'C'. A newstyle function must be identified by an associated info routine. See src/backend/utils/fmgr/README.
2000-11-20 21:36:57 +01:00
extern char get_typstorage(Oid typid);
Move get_attdisbursion to lsyscache. Clean up get_typdefault.
1999-08-09 05:13:31 +02:00
extern Datum get_typdefault(Oid typid);
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
extern bool get_attstatsslot(HeapTuple statstuple,
Oid atttype, int32 atttypmod,
int reqkind, Oid reqop,
Datum **values, int *nvalues,
float4 **numbers, int *nnumbers);
extern void free_attstatsslot(Oid atttype,
Datum *values, int nvalues,
float4 *numbers, int nnumbers);
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-28 03:59:28 +02:00
pgindent run. Make it all clean.
2001-03-22 05:01:46 +01:00
#define TypeIsToastable(typid) (get_typstorage(typid) != 'p')
Revise handling of oldstyle/newstyle functions per recent discussions in pghackers list. Support for oldstyle internal functions is gone (no longer needed, since conversion is complete) and pg_language entry 'internal' now implies newstyle call convention. pg_language entry 'newC' is gone; both old and newstyle dynamically loaded C functions are now called language 'C'. A newstyle function must be identified by an associated info routine. See src/backend/utils/fmgr/README.
2000-11-20 21:36:57 +01:00
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
#endif /* LSYSCACHE_H */