Please explain drop constraint oracle?
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Hi all, Can any one give answer for this question. Suppose im having employee table with fields, eno, ename, dept, address1, address2, address3. In address field employee can fill only address1 or address2 or address3... at a time he can fill three address fields. now i want all employee names who filled only one address field.. Plz its urjent can any one give querry.. Thanks in advance.
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