Question

在以下代码中，purchase_price将按语句覆盖案例顺序。

SELECT
    i.products_mpn, i.active,
    i.distributor_code, i.sales_price
FROM  
    @duplicates d
LEFT JOIN
    import i ON i.products_mpn = d.products_mpn 
             AND i.distributor_code = (SELECT TOP 1 distributor_code 
                                       FROM dbo.kting_ICECAT_import 
                                       WHERE products_mpn = d.products_mpn 
                                       ORDER BY 
                                          (SELECT 
                                               CASE
                                                  WHEN (i.distributor_code = 'x' or i.distributor_code = 'y') AND CAST(stock as int) > 0 
                                                     THEN 2
                                                  WHEN CAST(stock as int) > 0 
                                                     THEN 1
                                                  ELSE 0
                                               END) DESC, 
                                               CAST(purchase_price AS decimal(28,12)))

有没有办法让它通过case语句然后purchase_price进行排序？

Answer 1

如果您希望首先应用CASE语句的排序，然后排序purchase_price，那么您的ORDER BY已经将条款放在正确的位置。我不知道SELECT表达式中CASE正在做什么，或者即使当前查询运行也是如此。这样的事情可能就是你想到的：

ORDER BY CASE WHEN (i.distributor_code = 'x' or i.distributor_code = 'y') AND
                   CAST(stock as int) > 0 THEN 2
              WHEN CAST(stock as int) > 0 THEN 1
              ELSE 0
         END DESC, 
         CAST(purchase_price AS DECIMAL(28,12))

Answer 2

问题出在ORDER BY SELECT中。我曾使用左边的列连接“i.distributor_code”应该是distributor_code

二阶通过在SQL Server中首先覆盖

2 个答案: