hello, everyone
I am having problem using the operator OR. when I test for condition A OR
B in a query, the query becomes extensively slow or even fails, even
though a test on condition A or B alone gives result right away.
If you happened to know what the problem it or have any suggestion,
Good day everyone,
I've been having trouble using OR in my queries. I hope someone could
help me.
I have three tables t0 (k0, k1, k2), t1 (k0, k1), and t2 (k0, k2),
linked through three columns k0, k1, k2. Specifically the linkages are:
t0.k0 = t1.k0 and t0.k0 = t2.k0 and ( (t0.k1 =
