reports builder学习三

练习一



SELECT ORDERS.ORDER_ID,
ORDERS.SALES_REP_ID,
SUM(ORDERS.ORDER_TOTAL) AS Sum_ORDER_TOTAL
FROM ORDERS
GROUP BY ORDERS.ORDER_ID,
ORDERS.SALES_REP_ID






练习二 有条件格式化



SELECT EMPLOYEES.EMPLOYEE_ID,
EMPLOYEES.FIRST_NAME,
EMPLOYEES.LAST_NAME,
EMPLOYEES.SALARY
FROM EMPLOYEES













练习三


SELECT EMPLOYEES.FIRST_NAME,
EMPLOYEES.LAST_NAME,
EMPLOYEES.COMMISSION_PCT
FROM EMPLOYEES



在增加两个

function B_2FormatTrigger return boolean is
begin
IF (:COMMISSION_PCT >= 0.3) THEN
return (TRUE);
ELSE
RETURN(FALSE);
END IF;
end;

function B_3FormatTrigger return boolean is
begin
IF((:COMMISSION_PCT < 0.3) OR (:COMMISSION_PCT IS NULL))THEN
return (TRUE);
ELSE
RETURN(FALSE);
END IF;
end;

测试