sp_MSforeachtable在每个表上执行过程

Question

我想打印一些动态查询来对数据库中的所有表执行过程.这是我到目前为止所写的 -

EXEC SP_MSFOREACHTABLE '
    IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS 
       WHERE COLUMN_NAME="EMAIL_S" AND TABLE_NAME=PARSENAME("?",1))
    BEGIN
        PRINT ''EXEC DROPCONSTANT @TBLNAME=''+PARSENAME("?",1)
                  +'', @FLDNAME=''''EMAIL_S'''' ''
        PRINT CHAR(10)+CHAR(13)
    END
' 

输出不是我预期的 -

EXEC DROPCONSTANT @TBLNAME=bill, @FLDNAME='EMAIL_S'

但我真正想要的是 -

EXEC DROPCONSTANT @TBLNAME='bill', @FLDNAME='EMAIL_S'

Answer 1

怎么样呢:

DECLARE @output NVARCHAR(MAX) = N'';

SELECT @output += CHAR(13) + CHAR(10) 
  + 'EXEC DROPCONSTANT @TBLNAME=''' + t.name + ''','
  + '@FLDNAME=''EMAIL_S'';'
  FROM sys.tables AS t
  INNER JOIN sys.columns AS c
  ON t.[object_id] = c.[object_id]
  WHERE c.name = 'EMAIL_S';

SELECT @output;
-- EXEC sp_executesql @output;