Question

在我的SQL Server数据库中，一个客户可以拥有许多产品。

使用此包装时：

CASE
    WHEN br.Ptype# = 'LE' THEN 'Y'
    ELSE 'N'
END AS [Legal],
CASE
    WHEN br.Ptype# = 'BR' THEN 'Y'
    ELSE 'N'
END AS [BR],
CASE
    WHEN br.Ptype# = 'WS' THEN 'Y'
    ELSE 'N'
END AS [Screen],
CASE
    WHEN br.Ptype# = 'TW' THEN 'Y'
    ELSE 'N'
END AS [Van]

它返回：

Title   FirstName   LastName  Email                 Legal  BR  Screen  Van
Mr      Aaaa        Aaaa      test.email@test.com   N      Y   N       N
Mr      Aaaa        Aaaa      test.email@test.com   Y      N   N       N

如果此客户拥有这两种政策类型，我如何才能将返回的结果作为单行显示，其中Legal为Y，BR为Y？据我所知，这个客户有2种保险类型，我指定4我搜索我希望它返回结果如下：

Title  FirstName  LastName  Email               Legal  BR  Screen  Van
Mr     Aaaa       Aaaa      test.email@test.com Y      Y   N       N

提前感谢您的帮助。

SELECT DISTINCT --TOP 1000
dbo.PARSE_NAME_UDF(yy.Name#,'H') AS [Title],
dbo.PARSE_NAME_UDF(yy.Name#,'F') AS [FirstName],  
dbo.PARSE_NAME_UDF(yy.Name#,'L') AS [LastName],
yy.Email# AS [Email],
--br.PolRef@ AS [PolicyReference],
--bc.Datecreated# AS [Date Sold],
--br.Idat# AS [PolicyStartDate],
CASE
WHEN br.Ptype# = 'LE' THEN 'Y'
ELSE 'N'
END AS [Legal],
CASE
WHEN br.Ptype# = 'BR' THEN 'Y'
ELSE 'N'
END AS [BR],
CASE
WHEN br.Ptype# = 'WS' THEN 'Y'
ELSE 'N'
END AS [Screen],
CASE
WHEN br.Ptype# = 'TW' THEN 'Y'
ELSE 'N'
END AS [Van]

FROM brpolicy AS br
LEFT JOIN yyclient AS yy ON br.Ref@ = yy.Ref@ AND br.B@ = yy.B@
LEFT JOIN brcledger AS bc ON br.PolRef@ = bc.PolRef@ AND br.B@ = bc.B@

WHERE
br.Ref@ = 'AAAA06'
AND (br.Ptype# = 'WS'
OR br.Ptype# = 'LE'
OR br.Ptype# = 'BR'
OR br.Ptype# = 'TW'
)

请从where子句中忽略我的br.Ref @作为我的测试客户记录

Answer 1

您可以使用MAX：

SELECT  Title,
        FirstName,
        LastName,
        MAX(CASE
                WHEN br.Ptype# = 'LE' THEN 'Y'
                ELSE 'N'
            END) AS [Legal],
        MAX(CASE
                WHEN br.Ptype# = 'BR' THEN 'Y'
                ELSE 'N'
            END) AS [BR],
        CASE
            WHEN br.Ptype# = 'WS' THEN 'Y'
            ELSE 'N'
        END AS [Screen],
        MAX(CASE
                WHEN br.Ptype# = 'TW' THEN 'Y'
                ELSE 'N'
            END) AS [Van]
FROM dbo.YourTable
GROUP BY Title,
         FirstName,
         LastName

Answer 2

试试这个

Select * from (SELECT  Title,
        FirstName,
        LastName,
        CASE
            WHEN br.Ptype# = 'LE' THEN 'Y'
            ELSE 'N'
        END AS [Legal],
        CASE
            WHEN br.Ptype# = 'BR' THEN 'Y'
            ELSE 'N'
        END AS [BR],
        CASE
            WHEN br.Ptype# = 'WS' THEN 'Y'
            ELSE 'N'
        END AS [Screen],
        CASE
            WHEN br.Ptype# = 'TW' THEN 'Y'
            ELSE 'N'
        END AS [Van]
FROM dbo.YourTable
GROUP BY Title,
         FirstName,
         LastName) as tProduct where Legal = 'Y' and BR = 'Y'

多个案例陈述到一行

2 个答案: