Question

我需要使用PL / SQL存储过程填充此事实表：

CREATE TABLE SALES_FACTS
(saleDay        DATE,
vehicleCode         INT,
planID          INT,
dealerID        INT,
vehiclesSold        INT,
grossSalesAmt   NUMBER(10),
CONSTRAINT SALE_DAY_FK FOREIGN KEY (saleDay) REFERENCES TIMES(saleDay) ON DELETE CASCADE,
CONSTRAINT VEHICLE_CODE_FK FOREIGN KEY (vehicleCode) REFERENCES VEHICLES(vehicleCode) ON DELETE CASCADE,
CONSTRAINT PLAN_ID_FK FOREIGN KEY (planID) REFERENCES FINANCING_PLANS(planID) ON DELETE CASCADE,
CONSTRAINT DEALER_FK FOREIGN KEY (dealerID) REFERENCES DEALERSHIPS(dealerID) ON DELETE CASCADE,
CONSTRAINT SALES_FACTS_PK PRIMARY KEY (saleDay, vehicleCode, planID, dealerID));

我被要求通过使用四个嵌套游标循环来获得维度表的主键的每种可能组合，以及每种组合的总销售量和总销售额。

此外，如果vehiclesSold和grossSalesAmount的值为零，则 SHOULD NOT 行将插入SALES_FACTS表格。

只应插入销售某些车辆的四个外键列组合的行。

我创建了以下代码，希望能够实现这一目标：

CURSOR factData IS

SELECT vehicleVin,saleDate,sf.planID,sp.dealerID
    COUNT (*) AS vehiclesSold
    SUM (s.grossSalePrice) AS grossSalesAmount
FROM SALES s, SALES_FINANCINGS sf, SALESPERSONS sp
WHERE s.saleID = sf.saleID
AND s.salespersonID = sp.salespersonID
GROUP BY vehicleVIN, saleDate, sf.planID, sp.dealerID
HAVING COUNT(*) > 0;
BEGIN
FOR record IN factData
LOOP
    INSERT INTO SALES_FACTS (saleDay,vehicleCode,planID,dealerID,vehiclesSold, grossSalesAmount
    VALUES (record.saleDate,record.vehicleVin,record.planID,record.dealerID,record.vehiclesSold,record.grossSalesAmount);
END LOOP;
END;
/

但是代码执行正常，但是当我运行

时，我没有得到任何结果

SELECT COUNT(*) FROM SALES_FACTS;

我在这里创建了一个SQL Fiddle链接http://sqlfiddle.com/#!4/9708d6/1，因为表格和表格的代码太多而无法在这个问题上发布。请记住，我只为每个表INSERT编辑了大约2-3行数据，以使代码稍微缩短，但是插入的数据应该足以使其正常工作。

请让我知道我哪里出错了，解决问题的最佳方法是什么！提前谢谢！

Answer 1

这结束了这个伎俩。感谢所有评论的帮助。

DECLARE
CURSOR sales_data
IS
 SELECT vehicleVIN, saleDate, SF.planID, SP.dealerID, 
 COUNT(*) AS vehiclesSold, SUM(S.grossSalePrice) AS grossSalesAmt
 FROM SALES S, SALES_FINANCINGS SF, SALESPERSONS SP, VEHICLES V
 WHERE S.saleID = SF.saleID AND S.vehicleVIN = V.vehicleCode AND S.salespersonID = SP.salespersonID
 GROUP BY vehicleVIN, saleDate, SF.planID, SP.dealerID
 HAVING COUNT(*) > 0;

BEGIN
FOR record IN sales_data
LOOP
    INSERT INTO SALES_FACTS (saleDay,vehicleCode,planID,dealerID,vehiclesSold, grossSalesAmt)
    VALUES (record.saleDate,record.vehicleVIN,record.planID,record.dealerID,record.vehiclesSold,record.grossSalesAmt);
END LOOP;
END;
/

用于填充事实表的PL / SQL存储过程

1 个答案: