透视和连接SQL Server中的列中的值 [英] Pivot and concatenate values from column in SQL Server

问题描述

我的表格具有以下列:

ID | Name  | Value
------------------
 1 | Test1 | 0
 2 | Test2 | 1
 3 | Test3 | 0
 4 | Test4 | 0
 5 | Test5 | 1

而且我想将值列进行透视和连接

And I want to have pivoted and concatenated value column as string

01001

推荐答案

下面的代码将给出预期的结果:

The below code will give the expected result:

SELECT @Result = @Result + CAST(VALUE AS VARCHAR)
FROM #TmpTestingTable

或者您可以使用STUFF:

SELECT STUFF(
    (   SELECT CAST(VALUE AS VARCHAR) 
        FROM #TmpTestingTable
        FOR XML PATH ('')
    ), 1, 0, '')

例如，我将列插入临时表并执行代码.

For sample, I inserted the columns into the temporary table and execute the code.

CREATE TABLE #TmpTestingTable (ID INT, Name VARCHAR (20), Value INT)

INSERT INTO #TmpTestingTable (ID, Name, Value) VALUES
(1 , 'Test1' , 0),
(2 , 'Test2' , 1),
(3 , 'Test3' , 0),
(4 , 'Test4' , 0),
(5 , 'Test5' , 1)

DECLARE @Result AS VARCHAR (100) = '';

-- using variable approach
SELECT @Result = @Result + CAST(VALUE AS VARCHAR)
FROM #TmpTestingTable

SELECT @Result

-- using STUFF approach
SELECT STUFF(
    (   SELECT CAST(VALUE AS VARCHAR) 
        FROM #TmpTestingTable
        FOR XML PATH ('')
    ), 1, 0, '')

DROP TABLE #TmpTestingTable

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