Should there be any difference between:
select * from table1 a left join table2 b on a.pk=b.fk and b.typeid=14
and
select * from table1 a left join table2 b on a.pk=b.fk
where coalesce(b.typeid,14)=14
The reason I need to use the coalesce is because my goal is to do it with a
full join and
I figured out my problem.
Table1 and Table2 have matches for every pk,fk just not on typeid=14,
therefore when I join on just the pk,fk and do a where looking for null, it
doesn't find any rows that qualify.
Doesn't help me solve my problem, but at least I know where I'm at.
Sim
Sim Zacks
Sim Zacks [EMAIL PROTECTED] writes:
Should there be any difference between:
select * from table1 a left join table2 b on a.pk=b.fk and b.typeid=14
and
select * from table1 a left join table2 b on a.pk=b.fk
where coalesce(b.typeid,14)=14
Quite a lot: every A row is guaranteed to appear in the
