Question

目前，我将数据分解为月份间隔。这就是我希望它显示的方式，但我只想显示ordered_by对于整个表LoadCount总共300或更多的那些。所以基本上，我想抛弃任何至少没有300 {/ 1>的ordered_by

SELECT YEAR(stop.actual_arrival) AS Year, MONTH(stop.actual_arrival) AS Month, COUNT(stop.id) AS DeliveryCount, orders.ordered_by, COUNT(DISTINCT orders.id) 
              AS LoadCount
FROM     stop INNER JOIN
                  (SELECT company_id, order_id, tractor_id
                   FROM      billing_history
                   GROUP BY order_id, tractor_id, company_id) AS derivedtbl_1 ON stop.company_id = derivedtbl_1.company_id AND stop.order_id = derivedtbl_1.order_id INNER JOIN
              tractor ON derivedtbl_1.company_id = tractor.company_id AND derivedtbl_1.tractor_id = tractor.id INNER JOIN
              orders ON derivedtbl_1.company_id = orders.company_id AND derivedtbl_1.order_id = orders.id
WHERE  (orders.order_type_id IN ('12', '13')) AND (stop.stop_type = 'SO') AND (stop.actual_arrival >= DATEADD(month, - 18, GETDATE())) AND (orders.customer_id = 945000) AND 
              (orders.ordered_by IS NOT NULL)
GROUP BY YEAR(stop.actual_arrival), MONTH(stop.actual_arrival), orders.ordered_by
ORDER BY Year, Month, orders.ordered_by

我一直在来回询问我是否需要派生表或什么......任何帮助都会非常感激。谢谢你们。

我试图抛弃任何总共不超过300的ordered_by。如果它们在整个电路板上加起来达到300，我希望它们能够显示出来，即使它们在那条线上是5。

Answer 1

如果我正确理解了您的问题，您可以使用select子句中的CASE语句来显示NULL或orders.ordered_by，具体取决于LoadCount的值。这是一个包含一些示例的页面：http://msdn.microsoft.com/en-us/library/ms181765(v=sql.110).aspx

Answer 2

如果你要做的就是抛弃任何ordered_by小于300的结果，你可以在HAVING

中使用GROUP BY子句

<snip...>
GROUP BY YEAR(stop.actual_arrival), MONTH(stop.actual_arrival), orders.ordered_by
HAVING orders.ordered_by >= 300
ORDER BY Year, Month, orders.ordered_by

基于同一列显示和排序

2 个答案: