Please explain drop constraint oracle?
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how to retrieve 1st and last row of table without using group functions??
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1:-How to write to update command in a procedure in oracle which update two different table at a time 2:-How to write the select command in a procedure in oracle which give multiple records
T1: T2 A X--- this is updated record B B like this T1 table having no.of records updated. write a query"retrive updated record from T2"
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