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, pleas
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 = t1.