Question

我想在一个字符串中检索列名列表。

每个列名称应以逗号

分隔

示例：

col1, col2, col3

Answer 1

试试这个

Select Stuff(
        (
        Select ', ' + T2.ColVlaue  // Add a comma (,) before each value
        From MyTable As T2
        Where T2.ID= T1.ID
        For Xml Path(''), type // Select it as XML
        ).value('.', 'nvarchar(max)'), 1, 2, '')  // This is done to remove the first character (,) from the result
From MyTable As T1
Group By T1.Id

或者：

DECLARE @Value VARCHAR(8000)  
SELECT @Value = COALESCE(@Names + ', ', '') + ColValue FROM People
SELECT @Value

Answer 2

在ORACLE中，您可以使用LISTAGG功能执行此操作：

    SELECT  
LISTAGG(COLUMN_NAME, ', ')
 WITHIN GROUP (ORDER BY COLUMN_NAME) "col names"
    FROM USER_TAB_COLUMNS
      where TABLE_NAME='Table names here';

我迟到了吗？ kkk：）

哪个是SQL Server中Oracle wm_concat的等效命令？

2 个答案: