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postgresql/src/include/commands/sequence.h

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Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* sequence.h
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
* prototypes for sequence.c.
Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
*
Update copyright for 2014 Update all files in head, and files COPYRIGHT and legal.sgml in all back branches.
2014-01-07 22:05:30 +01:00
* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
Sequences are now based on int8, not int4, arithmetic. SERIAL pseudo-type has an alias SERIAL4 and a sister SERIAL8. SERIAL8 is just the same except the created column is type int8 not int4. initdb forced. Note this also breaks any chance of pg_upgrade from 7.1, unless we hack up pg_upgrade to drop and recreate sequences. (Which is not out of the question, but I don't wanna do it.)
2001-08-16 22:38:56 +02:00
* Portions Copyright (c) 1994, Regents of the University of California
*
Remove cvs keywords from all files.
2010-09-20 22:08:53 +02:00
* src/include/commands/sequence.h
Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
*
*-------------------------------------------------------------------------
*/
#ifndef SEQUENCE_H
#define SEQUENCE_H
Move Timestamp/Interval typedefs and basic macros into datatype/timestamp.h. As per my recent proposal, this refactors things so that these typedefs and macros are available in a header that can be included in frontend-ish code. I also changed various headers that were undesirably including utils/timestamp.h to include datatype/timestamp.h instead. Unsurprisingly, this showed that half the system was getting utils/timestamp.h by way of xlog.h. No actual code changes here, just header refactoring.
2011-09-09 19:23:41 +02:00
#include "access/xlog.h"
#include "fmgr.h"
Clean up the #include mess a little. walsender.h should depend on xlog.h, not vice versa. (Actually, the inclusion was circular until a couple hours ago, which was even sillier; but Bruce broke it in the expedient rather than logically correct direction.) Because of that poor decision, plus blind application of pgrminclude, we had a situation where half the system was depending on xlog.h to include such unrelated stuff as array.h and guc.h. Clean up the header inclusion, and manually revert a lot of what pgrminclude had done so things build again. This episode reinforces my feeling that pgrminclude should not be run without adult supervision. Inclusion changes in header files in particular need to be reviewed with great care. More generally, it'd be good if we had a clearer notion of module layering to dictate which headers can sanely include which others ... but that's a big task for another day.
2011-09-04 07:13:16 +02:00
#include "nodes/parsenodes.h"
#include "storage/relfilenode.h"
Add operator strategy and comparison-value datatype fields to ScanKey. Remove the 'strategy map' code, which was a large amount of mechanism that no longer had any use except reverse-mapping from procedure OID to strategy number. Passing the strategy number to the index AM in the first place is simpler and faster. This is a preliminary step in planned support for cross-datatype index operations. I'm committing it now since the ScanKeyEntryInitialize() API change touches quite a lot of files, and I want to commit those changes before the tree drifts under me.
2003-11-09 22:30:38 +01:00
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
typedef struct FormData_pg_sequence
{
NameData sequence_name;
Sequences are now based on int8, not int4, arithmetic. SERIAL pseudo-type has an alias SERIAL4 and a sister SERIAL8. SERIAL8 is just the same except the created column is type int8 not int4. initdb forced. Note this also breaks any chance of pg_upgrade from 7.1, unless we hack up pg_upgrade to drop and recreate sequences. (Which is not out of the question, but I don't wanna do it.)
2001-08-16 22:38:56 +02:00
int64 last_value;
Add a RESTART (without parameter) option to ALTER SEQUENCE, allowing a sequence to be reset to its original starting value. This requires adding the original start value to the set of parameters (columns) of a sequence object, which is a user-visible change with potential compatibility implications; it also forces initdb. Also add hopefully-SQL-compatible RESTART/CONTINUE IDENTITY options to TRUNCATE TABLE. RESTART IDENTITY executes ALTER SEQUENCE RESTART for all sequences "owned by" any of the truncated relations. CONTINUE IDENTITY is a no-op option. Zoltan Boszormenyi
2008-05-17 01:36:05 +02:00
int64 start_value;
Sequences are now based on int8, not int4, arithmetic. SERIAL pseudo-type has an alias SERIAL4 and a sister SERIAL8. SERIAL8 is just the same except the created column is type int8 not int4. initdb forced. Note this also breaks any chance of pg_upgrade from 7.1, unless we hack up pg_upgrade to drop and recreate sequences. (Which is not out of the question, but I don't wanna do it.)
2001-08-16 22:38:56 +02:00
int64 increment_by;
int64 max_value;
int64 min_value;
int64 cache_value;
int64 log_cnt;
bool is_cycled;
bool is_called;
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
} FormData_pg_sequence;
typedef FormData_pg_sequence *Form_pg_sequence;
Cleanup up include files.
1997-11-26 02:14:33 +01:00
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
/*
Update sequence-related functions to new fmgr style. Remove downcasing, quote-stripping, and acl-checking tasks for these functions from the parser, and do them at function execution time instead. This fixes the failure of pg_dump to produce correct output for nextval(Foo) used in a rule, and also eliminates the restriction that the argument of these functions must be a parse-time constant.
2000-06-11 22:08:01 +02:00
* Columns of a sequence relation
Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#define SEQ_COL_NAME 1
#define SEQ_COL_LASTVAL 2
Add a RESTART (without parameter) option to ALTER SEQUENCE, allowing a sequence to be reset to its original starting value. This requires adding the original start value to the set of parameters (columns) of a sequence object, which is a user-visible change with potential compatibility implications; it also forces initdb. Also add hopefully-SQL-compatible RESTART/CONTINUE IDENTITY options to TRUNCATE TABLE. RESTART IDENTITY executes ALTER SEQUENCE RESTART for all sequences "owned by" any of the truncated relations. CONTINUE IDENTITY is a no-op option. Zoltan Boszormenyi
2008-05-17 01:36:05 +02:00
#define SEQ_COL_STARTVAL 3
#define SEQ_COL_INCBY 4
#define SEQ_COL_MAXVALUE 5
#define SEQ_COL_MINVALUE 6
#define SEQ_COL_CACHE 7
#define SEQ_COL_LOG 8
#define SEQ_COL_CYCLE 9
#define SEQ_COL_CALLED 10
Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#define SEQ_COL_FIRSTCOL SEQ_COL_NAME
#define SEQ_COL_LASTCOL SEQ_COL_CALLED
Prototypes for sequence.c
1997-04-02 05:23:38 +02:00
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
/* XLOG stuff */
pgindent run. Make it all clean.
2001-03-22 05:01:46 +01:00
#define XLOG_SEQ_LOG 0x00
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
typedef struct xl_seq_rec
{
pgindent run. Make it all clean.
2001-03-22 05:01:46 +01:00
RelFileNode node;
New WAL version - CRC and data blocks backup.
2000-12-28 14:00:29 +01:00
/* SEQUENCE TUPLE DATA FOLLOWS AT THE END */
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
} xl_seq_rec;
Update sequence-related functions to new fmgr style. Remove downcasing, quote-stripping, and acl-checking tasks for these functions from the parser, and do them at function execution time instead. This fixes the failure of pg_dump to produce correct output for nextval(Foo) used in a rule, and also eliminates the restriction that the argument of these functions must be a parse-time constant.
2000-06-11 22:08:01 +02:00
extern Datum nextval(PG_FUNCTION_ARGS);
Change nextval and other sequence functions to specify their sequence argument as a 'regclass' value instead of a text string. The frontend conversion of text string to pg_class OID is now encapsulated as an implicitly-invocable coercion from text to regclass. This provides backwards compatibility to the old behavior when the sequence argument is explicitly typed as 'text'. When the argument is just an unadorned literal string, it will be taken as 'regclass', which means that the stored representation will be an OID. This solves longstanding problems with renaming sequences that are referenced in default expressions, as well as new-in-8.1 problems with renaming such sequences' schemas or moving them to another schema. All per recent discussion. Along the way, fix some rather serious problems in dbmirror's support for mirroring sequence operations (int4 vs int8 confusion for instance).
2005-10-03 01:50:16 +02:00
extern Datum nextval_oid(PG_FUNCTION_ARGS);
extern Datum currval_oid(PG_FUNCTION_ARGS);
extern Datum setval_oid(PG_FUNCTION_ARGS);
extern Datum setval3_oid(PG_FUNCTION_ARGS);
Add a function lastval(), which returns the value returned by the last nextval() or setval() performed by the current session. Update the docs, add regression tests, and bump the catalog version. Patch from Dennis Björklund, various improvements by Neil Conway.
2005-06-07 09:08:35 +02:00
extern Datum lastval(PG_FUNCTION_ARGS);
Update sequence-related functions to new fmgr style. Remove downcasing, quote-stripping, and acl-checking tasks for these functions from the parser, and do them at function execution time instead. This fixes the failure of pg_dump to produce correct output for nextval(Foo) used in a rule, and also eliminates the restriction that the argument of these functions must be a parse-time constant.
2000-06-11 22:08:01 +02:00
Implement remaining fields of information_schema.sequences view Add new function pg_sequence_parameters that returns a sequence's start, minimum, maximum, increment, and cycle values, and use that in the view. (bug #5662; design suggestion by Tom Lane) Also slightly adjust the view's column order and permissions after review of SQL standard.
2011-01-02 14:08:08 +01:00
extern Datum pg_sequence_parameters(PG_FUNCTION_ARGS);
pgindent run for release 9.3 This is the first run of the Perl-based pgindent script. Also update pgindent instructions.
2013-05-29 22:58:43 +02:00
extern Oid DefineSequence(CreateSeqStmt *stmt);
extern Oid AlterSequence(AlterSeqStmt *stmt);
Make TRUNCATE ... RESTART IDENTITY restart sequences transactionally. In the previous coding, we simply issued ALTER SEQUENCE RESTART commands, which do not roll back on error. This meant that an error between truncating and committing left the sequences out of sync with the table contents, with potentially bad consequences as were noted in a Warning on the TRUNCATE man page. To fix, create a new storage file (relfilenode) for a sequence that is to be reset due to RESTART IDENTITY. If the transaction aborts, we'll automatically revert to the old storage file. This acts just like a rewriting ALTER TABLE operation. A penalty is that we have to take exclusive lock on the sequence, but since we've already got exclusive lock on its owning table, that seems unlikely to be much of a problem. The interaction of this with usual nontransactional behaviors of sequence operations is a bit weird, but it's hard to see what would be completely consistent. Our choice is to discard cached-but-unissued sequence values both when the RESTART is executed, and at rollback if any; but to not touch the currval() state either time. In passing, move the sequence reset operations to happen before not after any AFTER TRUNCATE triggers are fired. The previous ordering was not logically sensible, but was forced by the need to minimize inconsistency if the triggers caused an error. Transactional rollback is a much better solution to that. Patch by Steve Singer, rather heavily adjusted by me.
2010-11-17 22:42:18 +01:00
extern void ResetSequence(Oid seq_relid);
Add DISCARD SEQUENCES command. DISCARD ALL will now discard cached sequence information, as well. Fabrízio de Royes Mello, reviewed by Zoltán Böszörményi, with some further tweaks by me.
2013-10-03 22:17:18 +02:00
extern void ResetSequenceCaches(void);
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
XLOG stuff for sequences. CommitDelay in guc.c
2000-11-30 02:47:33 +01:00
extern void seq_redo(XLogRecPtr lsn, XLogRecord *rptr);
Change the signature of rm_desc so that it's passed a XLogRecord. Just feels more natural, and is more consistent with rm_redo.
2014-06-14 09:46:48 +02:00
extern void seq_desc(StringInfo buf, XLogRecord *rptr);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 07:26:15 +01:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* SEQUENCE_H */