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我正在尝试创建一个程序来传递客户编号并返回去年的购买次数和购买总额。如果没有购买，则返回数量和总数为零，并返回销售人员在去年与该客户的联系次数。

我这样称呼它：

DECLARE 
      a_Var NUMBER;
      b_Var NUMBER;
      C_Var NUMBER;
      D_Var NUMBER;    
BEGIN
      three_pr(001116,a_Var, b_Var);

    IF a_Var > 0 THEN
        DBMS_OUTPUT.PUT_LINE('the number of purchases :' || a_Var);
        DBMS_OUTPUT.PUT_LINE('the total value of purchase :' || b_Var);

    ELSE

        SELECT ContactID,Count(contactID)
        INTO
             C_Var,D_Var
        FROM    DD_Contacts
        WHERE  DateofContact  between to_date ('2012/01/01', 'yyyy/mm/dd')
               AND to_date ('2012/12/31', 'yyyy/mm/dd')
      Group By ContactID;

       DBMS_OUTPUT.PUT_LINE (C_Var||D_Var);

    END IF;

END;
/

使用上面的代码时出现错误：

ORA-01422：精确提取返回的行数超过了请求的行数 ORA-06512：在第 16 行

这是程序：

CREATE or REPLACE PROCEDURE three_pr

(par_CustomerID IN NUMBER, par_sumpurchase OUT Number,par_totalvalue OUT Number)
IS
BEGIN

        SELECT 
            COUNT(O.OrderID),SUM(Price*Quantity)
        INTO par_sumpurchase,par_totalvalue
            FROM DD_Orders O JOIN DD_OrderLine OL ON O.OrderID = OL.OrderID
            WHERE  DatePurchase  between to_date ('2012/01/01', 'yyyy/mm/dd')
            AND to_date ('2012/12/31', 'yyyy/mm/dd')
            AND CustomerID = par_CustomerID;

END;
/
4

1 回答 1

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当查询不返回结果时，过程three_pr 未正确处理NO_DATA_FOUND 异常。

    CREATE or REPLACE PROCEDURE three_pr

    (par_CustomerID IN NUMBER, par_sumpurchase OUT Number,par_totalvalue OUT Number)
    IS
    BEGIN
        BEGIN
            SELECT 
                COUNT(O.OrderID),SUM(Price*Quantity)
            INTO par_sumpurchase,par_totalvalue
                FROM DD_Orders O JOIN DD_OrderLine OL ON O.OrderID = OL.OrderID
                WHERE  DatePurchase  between to_date ('2012/01/01', 'yyyy/mm/dd')
                AND to_date ('2012/12/31', 'yyyy/mm/dd')
                AND CustomerID = par_CustomerID;
        EXCEPTION
            WHEN NO_DATA_FOUND THEN
                par_sumpurchase := 0;
                par_totalvalue := 0;
        END;

    END;
    /
于 2013-11-12T18:56:58.397 回答