mirror of
https://github.com/postgres/postgres.git
synced 2026-06-07 07:42:18 -04:00
8abc490181
* Wrote max(date) and min(date) aggregates * Wrote operator "-" for date; date - date yields number of days difference * Wrote operator+(date,int) and operator-(date,int); the int is the number of days. Each operator returns a new date. By: Tom Tromey <tromey@creche.cygnus.com>
133 lines
4.7 KiB
C
133 lines
4.7 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* pg_aggregate.h--
|
|
* definition of the system "aggregate" relation (pg_aggregate)
|
|
* along with the relation's initial contents.
|
|
*
|
|
*
|
|
* Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $Id: pg_aggregate.h,v 1.3 1996/11/14 21:39:07 scrappy Exp $
|
|
*
|
|
* NOTES
|
|
* the genbki.sh script reads this file and generates .bki
|
|
* information from the DATA() statements.
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PG_AGGREGATE_H
|
|
#define PG_AGGREGATE_H
|
|
|
|
/* ----------------
|
|
* postgres.h contains the system type definintions and the
|
|
* CATALOG(), BOOTSTRAP and DATA() sugar words so this file
|
|
* can be read by both genbki.sh and the C compiler.
|
|
* ----------------
|
|
*/
|
|
|
|
/* ----------------------------------------------------------------
|
|
* pg_aggregate definition.
|
|
*
|
|
* cpp turns this into typedef struct FormData_pg_aggregate
|
|
*
|
|
* aggname name of the aggregate
|
|
* aggtransfn1 transition function 1
|
|
* aggtransfn2 transition function 2
|
|
* aggfinalfn final function
|
|
* aggbasetype type of data on which aggregate operates
|
|
* aggtranstype1 output types for xition func 1
|
|
* aggtranstype2 output types for xition func 2
|
|
* aggfinaltype output type for final func
|
|
* agginitval1 initial aggregate value
|
|
* agginitval2 initial value for transition state 2
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
CATALOG(pg_aggregate) {
|
|
NameData aggname;
|
|
Oid aggowner;
|
|
regproc aggtransfn1;
|
|
regproc aggtransfn2;
|
|
regproc aggfinalfn;
|
|
Oid aggbasetype;
|
|
Oid aggtranstype1;
|
|
Oid aggtranstype2;
|
|
Oid aggfinaltype;
|
|
text agginitval1; /* VARIABLE LENGTH FIELD */
|
|
text agginitval2; /* VARIABLE LENGTH FIELD */
|
|
} FormData_pg_aggregate;
|
|
|
|
/* ----------------
|
|
* Form_pg_aggregate corresponds to a pointer to a tuple with
|
|
* the format of pg_aggregate relation.
|
|
* ----------------
|
|
*/
|
|
typedef FormData_pg_aggregate *Form_pg_aggregate;
|
|
|
|
/* ----------------
|
|
* compiler constants for pg_aggregate
|
|
* ----------------
|
|
*/
|
|
|
|
#define Natts_pg_aggregate 11
|
|
#define Anum_pg_aggregate_aggname 1
|
|
#define Anum_pg_aggregate_aggowner 2
|
|
#define Anum_pg_aggregate_aggtransfn1 3
|
|
#define Anum_pg_aggregate_aggtransfn2 4
|
|
#define Anum_pg_aggregate_aggfinalfn 5
|
|
#define Anum_pg_aggregate_aggbasetype 6
|
|
#define Anum_pg_aggregate_aggtranstype1 7
|
|
#define Anum_pg_aggregate_aggtranstype2 8
|
|
#define Anum_pg_aggregate_aggfinaltype 9
|
|
#define Anum_pg_aggregate_agginitval1 10
|
|
#define Anum_pg_aggregate_agginitval2 11
|
|
|
|
|
|
/* ----------------
|
|
* initial contents of pg_aggregate
|
|
* ---------------
|
|
*/
|
|
|
|
DATA(insert OID = 0 ( avg PGUID int4pl int4inc int4div 23 23 23 23 0 0 ));
|
|
DATA(insert OID = 0 ( avg PGUID int2pl int2inc int2div 21 21 21 21 0 0 ));
|
|
DATA(insert OID = 0 ( avg PGUID float4pl float4inc float4div 700 700 700 700 0.0 0.0 ));
|
|
DATA(insert OID = 0 ( avg PGUID float8pl float8inc float8div 701 701 701 701 0.0 0.0 ));
|
|
|
|
DATA(insert OID = 0 ( sum PGUID int4pl - - 23 23 0 23 0 _null_ ));
|
|
DATA(insert OID = 0 ( sum PGUID int2pl - - 21 21 0 21 0 _null_ ));
|
|
DATA(insert OID = 0 ( sum PGUID float4pl - - 700 700 0 700 0.0 _null_ ));
|
|
DATA(insert OID = 0 ( sum PGUID float8pl - - 701 701 0 701 0.0 _null_ ));
|
|
|
|
DATA(insert OID = 0 ( max PGUID int4larger - - 23 23 0 23 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( max PGUID int2larger - - 21 21 0 21 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( max PGUID float4larger - - 700 700 0 700 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( max PGUID float8larger - - 701 701 0 701 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( max PGUID date_larger - - 1082 1082 0 1082 _null_ _null_ ));
|
|
|
|
DATA(insert OID = 0 ( min PGUID int4smaller - - 23 23 0 23 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( min PGUID int2smaller - - 21 21 0 21 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( min PGUID float4smaller - - 700 700 0 700 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( min PGUID float8smaller - - 701 701 0 701 _null_ _null_ ));
|
|
DATA(insert OID = 0 ( min PGUID date_smaller - - 1082 1082 0 1082 _null_ _null_ ));
|
|
|
|
DATA(insert OID = 0 ( count PGUID - int4inc - 0 0 23 23 _null_ 0 ));
|
|
|
|
/*
|
|
* prototypes for fucnctions in pg_aggregate.c
|
|
*/
|
|
extern void AggregateCreate(char *aggName,
|
|
char *aggtransfn1Name,
|
|
char *aggtransfn2Name,
|
|
char *aggfinalfnName,
|
|
char *aggbasetypeName,
|
|
char *aggtransfn1typeName,
|
|
char *aggtransfn2typeName,
|
|
char *agginitval1,
|
|
char *agginitval2);
|
|
extern char *AggNameGetInitVal(char *aggName, Oid basetype,
|
|
int xfuncno, bool *isNull);
|
|
|
|
#endif /* PG_AGGREGATE_H */
|
|
|
|
|
|
|
|
|