连接两个选择查询以在同一表中的一行中显示结果答案

【问题标题】：Joining two select queries to display the results in a single line from the same table连接两个选择查询以在同一表中的一行中显示结果
【发布时间】：2018-07-09 13:12:34
【问题描述】：

希望是一个简单的，但我需要帮助。

我有两个查询查看相同的数据，但使用不同的 where 语句。数据显示了交易日不同卡品牌的价值。但是，每个总数都在一个单独的行上，所以我希望在一行上看到所有商店所以 [LOCATION]、[TRADE DATE]、[VISA]、[AMEX]、[# RECORDS]。

我暂时将查询限制在一个位置。

任何帮助将不胜感激

查询A（签证记录）

SELECT 
 TILLREADREQUEST.STRTRADECODE AS [LOCATION]  
,TILLREADREQUEST.DTMTRADEDATE AS [TRADE DATE]
,SUM(TILLREADDETAIL.CURVALUE) AS [VISA]
,COUNT(TILLREADREQUEST.ctrcode) AS [# RECORDS],

FROM          
 TILLREADDETAIL INNER JOIN
 TILLREADREQUEST ON TILLREADDETAIL.LINTREQUESTCODE = TILLREADREQUEST.CTRCODE
WHERE        (TILLREADDETAIL.INTTENDERCODE IN ('3')) and TILLREADREQUEST.DTMTRADEDATE > getdate()-2 AND STRTRADECODE = 'SHEFFIELD'
group by     TILLREADREQUEST.STRTRADECODE,TILLREADREQUEST.DTMTRADEDATE*

查询 B（美国运通记录）

SELECT 
 TILLREADREQUEST.STRTRADECODE AS [LOCATION]  
,TILLREADREQUEST.DTMTRADEDATE AS [TRADE DATE]
,SUM(TILLREADDETAIL.CURVALUE) AS [AMEX]


FROM          
 TILLREADDETAIL INNER JOIN
 TILLREADREQUEST ON TILLREADDETAIL.LINTREQUESTCODE = TILLREADREQUEST.CTRCODE
WHERE        (TILLREADDETAIL.INTTENDERCODE IN ('4')) and TILLREADREQUEST.DTMTRADEDATE > getdate()-2 AND STRTRADECODE = 'SHEFFIELD'
group by     TILLREADREQUEST.STRTRADECODE,TILLREADREQUEST.DTMTRADEDATE*

【问题讨论】：

标签： sql-server join select

【解决方案1】：

在查询中使用CASE查询特定条件：

SELECT 
 TILLREADREQUEST.STRTRADECODE AS [LOCATION]  
,TILLREADREQUEST.DTMTRADEDATE AS [TRADE DATE]
,SUM(CASE WHEN TILLREADDETAIL.INTTENDERCODE IN ('3')
   THEN TILLREADDETAIL.CURVALUE
   ELSE 0
   END
) AS [VISA]
,SUM(CASE WHEN TILLREADDETAIL.INTTENDERCODE IN ('4')
   THEN TILLREADDETAIL.CURVALUE
   ELSE 0
   END
) AS [AMEX]
,COUNT(TILLREADREQUEST.ctrcode) AS [# RECORDS],

FROM          
 TILLREADDETAIL INNER JOIN
 TILLREADREQUEST ON TILLREADDETAIL.LINTREQUESTCODE = TILLREADREQUEST.CTRCODE
WHERE        (TILLREADDETAIL.INTTENDERCODE IN ('3', '4')) and TILLREADREQUEST.DTMTRADEDATE > getdate()-2 AND STRTRADECODE = 'SHEFFIELD'
group by     TILLREADREQUEST.STRTRADECODE,TILLREADREQUEST.DTMTRADEDATE*

【讨论】：

【解决方案2】：

如果您还想单独计算 VISA/AMEX 的记录，那么您还必须在此处添加案例。

SELECT 
 TILLREADREQUEST.STRTRADECODE AS [LOCATION]  
,TILLREADREQUEST.DTMTRADEDATE AS [TRADE DATE]
,SUM(CASE WHEN TILLREADDETAIL.INTTENDERCODE IN ('3') THEN TILLREADDETAIL.CURVALUE ELSE 0 END) AS [VISA]
,SUM(CASE WHEN TILLREADDETAIL.INTTENDERCODE IN ('4') THEN TILLREADDETAIL.CURVALUE ELSE 0 END) AS [AMEX]
,COUNT(CASE WHEN TILLREADREQUEST.ctrcode = '3' THEN 1 ELSE NULL END) AS [# RECORDS],
,COUNT(CASE WHEN TILLREADREQUEST.ctrcode = '4' THEN 1 ELSE NULL END) AS [# RECORDS]
FROM          
 TILLREADDETAIL INNER JOIN
 TILLREADREQUEST ON TILLREADDETAIL.LINTREQUESTCODE = TILLREADREQUEST.CTRCODE
WHERE        (TILLREADDETAIL.INTTENDERCODE IN ('3','4')) and TILLREADREQUEST.DTMTRADEDATE > getdate()-2 AND STRTRADECODE = 'SHEFFIELD'
group by     TILLREADREQUEST.STRTRADECODE,TILLREADREQUEST.DTMTRADEDATE*

【讨论】：