53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* skey.h--
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* POSTGRES scan key definitions.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: skey.h,v 1.8 1998/01/24 22:48:10 momjian Exp $
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*
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*
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* Note:
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* Needs more accessor/assignment routines.
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*-------------------------------------------------------------------------
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*/
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#ifndef SKEY_H
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#define SKEY_H
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#include <access/attnum.h>
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#include <fmgr.h>
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typedef struct ScanKeyData
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{
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bits16 sk_flags; /* flags */
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AttrNumber sk_attno; /* domain number */
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RegProcedure sk_procedure; /* procedure OID */
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FmgrInfo sk_func;
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int32 sk_nargs;
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Datum sk_argument; /* data to compare */
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} ScanKeyData;
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typedef ScanKeyData *ScanKey;
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#define SK_ISNULL 0x1
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#define SK_UNARY 0x2
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#define SK_NEGATE 0x4
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#define SK_COMMUTE 0x8
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#define ScanUnmarked 0x01
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#define ScanUncheckedPrevious 0x02
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#define ScanUncheckedNext 0x04
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/*
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* prototypes for functions in access/common/scankey.c
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*/
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extern void ScanKeyEntrySetIllegal(ScanKey entry);
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extern void ScanKeyEntryInitialize(ScanKey entry, bits16 flags,
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AttrNumber attributeNumber, RegProcedure procedure, Datum argument);
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#endif /* SKEY_H */
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