4.3BSD/usr/ingres/source/dbu/purgetup.c

# include	<ingres.h>
# include	<access.h>
# include	<sccs.h>

SCCSID(@(#)purgetup.c	8.1	12/31/84)

/*
**	Remove tuples from the specified system relation.
**
**	'Desa' is a descriptor for a system relation and
**	key[12] and dom[12] are the keys and domain numbers
**	to match on for the delete.
**	All the tuples in 'desa' with key1 and key2
**	are deleted from the relation.
*/

purgetup(d, key1, dom1, key2, dom2)
register DESC	*d;
char		*key1;
int		dom1;
char		*key2;
int		dom2;
{
	TID		tid, limtid;
	register int	i;
	char		tupkey[MAXTUP], tuple[MAXTUP];

	setkey(d, tupkey, key1, dom1);
	setkey(d, tupkey, key2, dom2);
	if (i = find(d, EXACTKEY, &tid, &limtid, tupkey))
		syserr("purgetup:find:%d", i);
	while ((i = get(d, &tid, &limtid, tuple, TRUE)) == 0)
	{
		if (kcompare(d, tuple, tupkey) == 0)
			if (i = delete(d, &tid))
				syserr("attflush: delete %d", i);
	}

	if (i < 0)
		syserr("purgetup:get %.14s:%d", d->reldum.relid, i);
}