Question

这非常接近，但与“将多行连接成单个文本字符串”Concatenate many rows into a single text string?

的帖子不同

但我需要的是，因为表/行有许多相同的名称，我只想显示DISTINCT名称。因此，在上述帖子和谷歌的帮助下，我能够将其拉下来......

171444  ACTIVE,ACTIVE,ACTIVE,ACTIVE,ACTIVE,ACTIVE,ACTIVE,ACTIVE

169171 RETIRED,RETIRED,RETIRED,RETIRED,RETIRED

173648  RETIRED,RETIRED,RETIRED,RETIRED,INELIGIBLE,INELIGIBLE

我想要的是：

171444  ACTIVE

169171 RETIRED

173648  RETIRED,INELIGIBLE

我想我已经钉了它：

Select distinct ST2.EmployeeID, 
           substring((Select DISTINCT (',' + ( ST1.AccrualStatus )) AS [text()]
            From dbo.Plan2 ST1
            Where ST1.EmployeeID = ST2.EmployeeID
            For XML PATH ('')),2, 1000) [Plan2]
     From dbo.Plan2 ST2

SUBSTRING中需要第二个DISTINCT，以确保我们只为每个值返回一个出现值。

Answer 1

这个答案来自你上次的评论。

假设您的表格至少包含[EmployeeID]列和[Statuses] VARCHAR列，其宽度足以包含您的任意状态字符串（我认为它们是状态），你是什么可以做的是：

UPDATE OT1
SET OT1.[Statuses] = OT2.[text]
FROM [OtherTable] AS OT1
JOIN (
    Select distinct ST2.EmployeeID, 
           substring((Select DISTINCT (',' + ( ST1.AccrualStatus )) AS [text()]
            From dbo.Plan2 ST1
            Where ST1.EmployeeID = ST2.EmployeeID
            For XML PATH ('')),2, 1000) [Plan2]
    From dbo.Plan2 ST2
) AS OT2([EmployeeID],[text])
    ON OT1.[EmployeeID] = OT2.[EmployeeID];

我希望这有效。

Answer 2

CREATE TABLE T2
    (
      pr VARCHAR(20) ,
      pt VARCHAR(20) ,
      qty INT
    );

INSERT  INTO T2
        ( pr, pt, qty )
VALUES  ( 'A', 'x1', 10 ),
        ( 'A', 'x2', 12 ),
        ( 'A', 'x1', 15 ),
        ( 'B', 'x1', 1 ),
        ( 'B', 'x5', 5 ),
        ( 'C', 'x5', 8 );


SELECT  g1.pt ,
        SUM(qty) AS SumQty ,
        STUFF(( SELECT DISTINCT
                        ', ' + g.pr
                FROM    T2 g
                WHERE   g.pt = g1.pt
              FOR
                XML PATH('')
              ), 1, 1, '') AS pr
FROM    T2 g1
GROUP BY g1.pt




CREATE TABLE T2
    (
      pr VARCHAR(20) ,
      pt VARCHAR(20) ,
      qty INT
    );

INSERT  INTO T2
        ( pr, pt, qty )
VALUES  ( 'A', 'x1', 10 ),
        ( 'A', 'x2', 12 ),
        ( 'A', 'x1', 15 ),
        ( 'B', 'x1', 1 ),
        ( 'B', 'x5', 5 ),
        ( 'C', 'x5', 8 );


SELECT  g1.pt ,
        SUM(qty) AS SumQty ,
        STUFF(( SELECT DISTINCT
                        ', ' + g.pr
                FROM    T2 g
                WHERE   g.pt = g1.pt
              FOR
                XML PATH('')
              ), 1, 1, '') AS pr
FROM    T2 g1
GROUP BY g1.pt

结果：

pt ---------- SumQty --------- pr

x1 ------------------ 26 ------------------ A，B

x-------- ------------------ 12 ------------------ A

x5 ------------------ 13 ------------------- B，C

使用DISTINCT子句将许多行连接成单个文本字符串？

2 个答案:

pt ---------- SumQty --------- pr