UPDATE emp SET sal=sal+2000 WHERE empno=erec.empno;
END IF;
-- UPDATE emp SET sal=sal+vraise WHERE empno=erec.empno;
-- DBMS_OUTPUT.PUT_LINE(vraise);
END;
/
Q.接受两个数相除并且显示结果。如果第二个数为0,则显示消息“DIVIDE BY ZERO”。
A.
DECLARE
num1 NUMBER;
num2 NUMBER;
BEGIN
num1:=#
num2:=#
DBMS_OUTPUT.PUT_LINE(num1 || ''''/'''' || num2 || '''' is '''' || num1/num2);
EXCEPTION
WHEN ZERO_DIVIDE THEN
DBMS_OUTPUT.PUT_LINE(''''Didn''''''''t your teacher tell you not to DIVIDE BY ZERO?'''');
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