oracle - add a check constraint for the column -


add check constraint column, insert values didn't have special characters except comma, space, full-stop , number in them?

for example allows like: group co.,ltd

should not allow ¿abc important

you can try below example-

alter table emp add ( constraint cc_name check (trim(translate(upper(ename),' abcdefghijklmnopqrstuvwxyz0123456789_,.',' ')) null));

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