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How To Assign Data Of The Deleted Row To Variables? |
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Answer» If a DELETE statement is deleting a SINGLE row, you can assign column values of the deleted row to variables by using the RETURNING clause, which an extension of DELETE statements for PL/SQL. The tutorial script SHOWS you how to do this: CREATE TABLE emp_temp AS SELECT * FROM employees; DECLARE fname VARCHAR2(10); lname VARCHAR2(10); BEGIN DELETE FROM emp_temp WHERE employee_id = 100; RETURNING first_name, last_name INTO fname, lname; DBMS_OUTPUT.PUT_LINE('Name deleted = ' || fname || ' ' || lname); -- This will not work because multiple rows deleted -- DELETE FROM emp_temp WHERE employee_id > 100; -- RETURNING first_name, last_name INTO fname, lname; END; /Name deleted = Steven King Similar to SELECT ... INTO, RETURNING ... INTO will not work if multiple rows are deleted. If a DELETE statement is deleting a single row, you can assign column values of the deleted row to variables by using the RETURNING clause, which an extension of DELETE statements for PL/SQL. The tutorial script shows you how to do this: Name deleted = Steven King Similar to SELECT ... INTO, RETURNING ... INTO will not work if multiple rows are deleted. |
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