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/*-------------------------------------------------------------------------
*
* sequence.h
* prototypes for sequence.c.
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/commands/sequence.h
*
*-------------------------------------------------------------------------
*/
#ifndef SEQUENCE_H
#define SEQUENCE_H
#include "access/xlogreader.h"
#include "catalog/objectaddress.h"
#include "fmgr.h"
#include "lib/stringinfo.h"
#include "nodes/parsenodes.h"
#include "storage/relfilenode.h"
typedef struct FormData_pg_sequence
{
NameData sequence_name;
int64 last_value;
int64 start_value;
int64 increment_by;
int64 max_value;
int64 min_value;
int64 cache_value;
int64 log_cnt;
bool is_cycled;
bool is_called;
} FormData_pg_sequence;
typedef FormData_pg_sequence *Form_pg_sequence;
/*
* Columns of a sequence relation
*/
#define SEQ_COL_NAME 1
#define SEQ_COL_LASTVAL 2
#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
#define SEQ_COL_FIRSTCOL SEQ_COL_NAME
#define SEQ_COL_LASTCOL SEQ_COL_CALLED
/* XLOG stuff */
#define XLOG_SEQ_LOG 0x00
typedef struct xl_seq_rec
{
RelFileNode node;
/* SEQUENCE TUPLE DATA FOLLOWS AT THE END */
} xl_seq_rec;
extern Datum nextval(PG_FUNCTION_ARGS);
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);
extern Datum lastval(PG_FUNCTION_ARGS);
extern Datum pg_sequence_parameters(PG_FUNCTION_ARGS);
extern ObjectAddress DefineSequence(CreateSeqStmt *stmt);
extern ObjectAddress AlterSequence(AlterSeqStmt *stmt);
extern void ResetSequence(Oid seq_relid);
extern void ResetSequenceCaches(void);
extern void seq_redo(XLogReaderState *rptr);
extern void seq_desc(StringInfo buf, XLogReaderState *rptr);
extern const char *seq_identify(uint8 info);
#endif /* SEQUENCE_H */