Question

当前表：

txtFullName  | First Activity
_____________________________

Joe Bloggs   | Football

Joe Bloggs   | Tennis    

Katie Bloggs | Tennis

我想把它当成......

txtFullName  | First Activity
_____________________________
Joe Bloggs   | Football, Tennis

Katie Bloggs | Tennis

**我尝试过使用COALESCE和FOR XML PATH（''）..我在这个陈述中似乎无法正确使用..还有另一种方法可以做同样的事情吗？

任何帮助都将不胜感激!!

Answer 1

以下是基于结果的XML示例。现在，您可以将查询放在CTE中，并将此解决方案应用于结果。

declare @tbl as table (
    txtFullName varchar(15)
    ,firstActivity varchar(15)
)

insert into @tbl values ('Joe Bloggs', 'Football')
insert into @tbl values ('Joe Bloggs', 'Tennis')
insert into @tbl values ('Katie Bloggs', 'Tennis')



SELECT
    txtFullName
    ,STUFF(
        (SELECT ', ' + firstActivity
        FROM @tbl
        WHERE txtFullName = a.txtFullName
        FOR XML PATH(''),TYPE).value('.','NVARCHAR(MAX)'),1,1,'') AS firstActivity
FROM @tbl a
GROUP BY txtFullName

<强>更新

SELECT
    t0.txtFullName AS 'Name'
    ,t1.[FirstActivity]
FROM (
    SELECT txtFullName FROM tblMembers WHERE txtForm = '10'
) T0 
LEFT JOIN (
    SELECT
        txtFullName
        ,STUFF(
        (SELECT ', ' + txtName
        FROM tblLists
        INNER JOIN tblAllLists
            ON tblLists.intID = tblAllLists.intID
        INNER JOIN tblMembers
            ON tblAllLists.instuiID = tblMembers.instuiID
        WHERE txtFullName = M.txtFullName
        FOR XML PATH(''),TYPE).value('.','NVARCHAR(MAX)'),1,1,'') AS firstActivity
    FROM tblLists
    INNER JOIN tblAllLists
        ON tblLists.intID = tblAllLists.intID
    INNER JOIN tblMembers M
        ON tblAllLists.instuiID = M.instuiID 
    WHERE txtDay = 'Mon' AND txtForm = '10' AND txtDesc='Norm'
    GROUP BY txtFullName
) T1
    ON t0.txtFullName = t1.txtFullName

Answer 2

您可以使用STRING_AGG（自SQL Server 2017起）

SELECT
    txtFullName,
    STRING_AGG(txtName,',')  AS 'First Activity'
FROM
    tblLists
    INNER JOIN tblMembers ON
        tblLists.txtInstituID = tblMembers.txtInstituID
    INNER JOIN tblAllLists ON
        tblLists.intID = tblAllLists.intID 
WHERE
  Day = 'Mon' AND
  txtForm = '10' AND
  Desc='Norm' AND
  txtID = '10'
GROUP BY
    txtFullName

使用多个值连接SQL行

2 个答案: