/*-------------------------------------------------------------------------
 *
 * sequence.h--
 *    prototypes for sequence.c.
 *
 *
 *-------------------------------------------------------------------------
 */
#ifndef SEQUENCE_H
#define SEQUENCE_H

/* 
 * Columns of a sequnece relation
 */
 
#define SEQ_COL_NAME		1
#define SEQ_COL_LASTVAL		2
#define SEQ_COL_INCBY		3
#define SEQ_COL_MAXVALUE	4
#define SEQ_COL_MINVALUE	5
#define SEQ_COL_CACHE		6
#define SEQ_COL_CYCLE		7
#define SEQ_COL_CALLED		8

#define SEQ_COL_FIRSTCOL	SEQ_COL_NAME
#define SEQ_COL_LASTCOL		SEQ_COL_CALLED

extern void DefineSequence (CreateSeqStmt *stmt);
extern int4 nextval (struct varlena *seqname);
extern int4 currval (struct varlena *seqname);
extern void CloseSequences (void);

#endif	/* SEQUENCE_H */
