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我正在做 sql 查询，它用于从数据库中检索记录以显示在报告中。问题是当我将计算作为子查询放置时，SENOKO列在每一行中都显示有冗余记录。我已经通过将其作为主要查询进行了测试，报告中显示的数字是正确的。

DO 作为子查询

SELECT  whbal.customer, customer.imp_license_no,
         (SELECT SUM(CONVERT(DECIMAL(8, 3), (CONVERT(DECIMAL(8, 3), whbal.qty_good) + 
                     CONVERT(DECIMAL(8, 3), whbal.qty_slack)) * 
                     CONVERT(DECIMAL(8, 3), whbal.std_weight) / 1000)) 
         FROM whbal 
         INNER JOIN customer ON whbal.customer = customer.customer
         WHERE whbal.warehouse = 'SKW') AS SENOKO
FROM     customer 
INNER JOIN whbal ON whbal.customer = customer.customer
WHERE    (whbal.customer BETWEEN @cust1 AND @cust2)
GROUP BY whbal.customer, customer.imp_license_no

DO 作为主要查询

SELECT whbal.customer, 
       customer.psq_level, 
       SUM(CONVERT(DECIMAL(8, 3), (CONVERT(DECIMAL(8, 3), whbal.qty_good) + 
           CONVERT(DECIMAL(8, 3), whbal.qty_slack)) * 
           CONVERT(DECIMAL(8, 3), whbal.std_weight) / 1000)) AS SENOKO
FROM   whbal 
INNER JOIN customer ON whbal.customer = customer.customer
WHERE (whbal.customer BETWEEN @cust1 AND @cust2) AND (whbal.warehouse = 'SKW')
GROUP BY whbal.customer, customer.psq_level

有人知道我的查询有什么问题吗？请帮助和指导提前谢谢

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1 回答 1

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在第一种情况下，您为每对 customer/imp_license_no 连接表计算 SENOKO。在第二种情况下，您为同一表的每一对 customer/psq_level 计算 SENOKO，因此结果行数可能不相等

UPDATE
看起来像在子查询中你没有过滤这个：（whbal.customer BETWEEN @cust1 AND @cust2）

于 2013-11-01T08:35:15.993 回答