I want to select all the entries from d that have at least one
corresponding entry in u that meets my conditions. The problem is that
count(*) is returning the number of corresponding entries in u, and I
want only the number of entries in d. How do I do this?
create table d( id int primary key, status int default 1
);
create table a( key int primary key, status int default 1
);
create table u( dkey int not null,akey int not null,b bool DEFAULT false, status int default 1,primary key
(dkey,akey)
);
insert into d values (1, 2);
insert into a values (1, 3);
insert into a values (2, 3);
insert into a values (3, 3);
insert into u values(1,1,false,2);
insert into u values(1,2,false,1);
insert into u values(1,3,false,2);
select count(*) from d where status = 2 and d.id = u.dkey and u.status =
2 and not u.b and u.akey = a.key and a.status = 3;
/* that returns 2 when I want it to return 1 */
drop table d;
drop table a;
drop table u;
--
Joseph Shraibman
jks@selectacast.net
Increase signal to noise ratio. http://www.targabot.com
