Question

我用我的架构和一些测试数据创建了SQLFiddle（谢谢，Amadan！）。计算列在SQLFiddle中由于某种原因不起作用，但它们在我的MYSQL Workbench中表现良好。假设它们正常工作。

我的查询得到了这么多：

SELECT DISTINCT o.orderid,i.invoiceid,i.subinvoicenumber,stockingorderid AS oistockingorderid,

IF(stockingorderid > 0, 0, po.purchaseorderid) AS purchaseorderid,subponumber,po.paidvia,dropshipfee,i.taxstate,

COALESCE(
    (SELECT mfrname 
        FROM cs_products.tblstockingorders so 
        WHERE so.stockingorderid=oistockingorderid),
    po.mfrname)
AS source,

(i.shipping + i.surcharge + 
    (SELECT SUM(additionalshipping * quantity) AS additionalshipping 
        FROM cs_products.tblorderitems 
        WHERE invoiceid=i.invoiceid)) 
AS shipping,

CAST(IF(o.paymentmethod=2, CONCAT('Check: ', i.checknumber),o.paymentmethod) AS CHAR) AS invoicepaidvia,

COALESCE(
    (SELECT (SUM(cost * quantity) * IF(so.mfrdiscount > 0, 1 - so.mfrdiscount, 1)) AS cost 
        FROM cs_products.tblorderitems oi 
        JOIN cs_products.tblallocations a ON oi.orderitemid=a.orderitemid 
        JOIN cs_products.tblstockingorders so ON a.stockingorderid=so.stockingorderid
        WHERE a.stockingorderid=oistockingorderid),
    (SELECT (SUM(cost * quantity) * IF(po.mfrdiscount > 0, 1 - po.mfrdiscount, 1)) AS cost 
        FROM cs_products.tblorderitems 
        WHERE purchaseorderid=po.purchaseorderid)) 
    AS grosscost,

(SELECT SUM(price * quantity)
    FROM cs_products.tblorderitems 
    WHERE invoiceid=i.invoiceid) 
AS grossprice

FROM cs_products.tblorders o 
    JOIN cs_products.tblinvoices i ON o.orderid=i.orderid
    #ordertype of 0 means the order came from the website
    LEFT JOIN cs_products.tblpurchaseorders po ON o.orderid=po.orderid AND IF(o.ordertype<>0, subinvoicenumber=subponumber, subinvoicenumber=0 AND subponumber>=0)
    LEFT JOIN cs_products.tblallocations a ON a.orderid=o.orderid

这让我有95％的路要走。正如您所看到的，对于OrderId 1287，它显示了两个stockingorderid s的记录，而没有purchaseorderid的记录，即使采购订单已归因于1287.我期待的是看到缺失的行是这样的：

1287|276|0|NULL|194|0||0|0|'Quality Fabricators'|357.53|0|781.43|11917.70

再次，不要担心计算列，我只想要显示记录。我觉得我错过了最小的东西，但我不知道它是什么。

谢谢！

更新计算列无效的原因是因为使用了旧订单商品数据。我有机会的时候会更新它。

Answer 1

我建议您使用NULL（而不是0）分别代表PO和SO记录的stockingorderid和purchaseorderid：

ALTER TABLE tblorderitems MODIFY purchaseorderid int(10) unsigned NULL;
UPDATE tblorderitems SET purchaseorderid = NULL WHERE purchaseorderid = 0;

然后，您可以使用UNION子查询加入查询，该子查询提供一组所有（订单， stockingorder ）和（订单， purchaseorder ）对：

  SELECT orderid, stockingorderid, NULL AS purchaseorderid FROM tblallocations
UNION ALL
  SELECT orderid, NULL AS stockingorderid, purchaseorderid FROM tblpurchaseorders

我认为您的查询可以简化为：

SELECT   orderid, invoiceid, subinvoicenumber, purchaseorderid, subponumber,
         tblpurchaseorders.paidvia, dropshipfee, tblinvoices.taxstate,
         invoicedate, datepaid, stockingorderid,

         COALESCE(tblstockingorders.mfrname, tblpurchaseorders.mfrname) AS source,

         shipping + surcharge + SUM(quantity * additionalshipping) AS shipping,

         CASE paymentmethod
           WHEN 2 THEN CONCAT('Check: ', checknumber)
           ELSE CAST(paymentmethod AS CHAR)
         END AS InvoicePaidVia,

         (1-COALESCE(tblstockingorders.mfrdiscount, tblpurchaseorders.mfrdiscount))
           * SUM(quantity * cost) AS grosscost,

         SUM(quantity * price) AS grossprice

FROM     tblorders
  JOIN   tblinvoices          USING (orderid)
  JOIN (
          SELECT orderid, orderitemid, stockingorderid, NULL AS purchaseorderid
          FROM   tblallocations
        UNION ALL
          SELECT orderid, NULL, NULL, purchaseorderid
          FROM   tblpurchaseorders
       ) AS t                 USING (orderid)
  LEFT JOIN tblpurchaseorders USING (orderid,purchaseorderid)
  LEFT JOIN tblstockingorders USING (stockingorderid)
  LEFT JOIN tblorderitems     USING (orderid,orderitemid,invoiceid,purchaseorderid)
WHERE    ordertype = 0 OR subinvoicenumber = subponumber
GROUP BY orderid, invoiceid, subinvoicenumber, purchaseorderid, subponumber,
         tblpurchaseorders.paidvia, dropshipfee, tblinvoices.taxstate, datepaid,
         invoicedate, stockingorderid, shipping, surcharge, paymentmethod,
         tblstockingorders.mfrname, tblpurchaseorders.mfrname, checknumber,
         tblstockingorders.mfrdiscount, tblpurchaseorders.mfrdiscount

在sqlfiddle上查看，删除了对invoicedate列的引用（因为它不在您的示例模式中）。

复杂的MySQL查询，我很接近，我可以闻它

1 个答案: