Rick Hillegas wrote: > You can also implement NOT NULL as a check contraint. Most databases > consider that to be an inefficiency which it's worth optimizing with > custom logic.
"Custom" logic that's defined by the SQL Standard. :-) Dan.
Rick Hillegas wrote: > You can also implement NOT NULL as a check contraint. Most databases > consider that to be an inefficiency which it's worth optimizing with > custom logic.
"Custom" logic that's defined by the SQL Standard. :-) Dan.