如何在T-SQL存储过程中检索对应表和列的行值

Question

我正在使用一个存储过程来搜索整个数据库，并在ID字段中返回表名，列名和值。我对用表名和列名进行搜索感到很满意，但没有获得相应的ID 。

 table-name:Task_typen

 task_ID  task      name
  1       reading   read_task
  2       writing   write_task
  3       sleeping  sleep_task

示例：当我搜索字符串“ writing”时

表名即“ Task_typen”和列名“ task”已输出，但我需要在task_ID中为字符串“ writing”提供相应的ID，即2也应与表名和列名一起输出

存储过程可以在下面找到

CREATE TABLE myTable99 (TABLE_NAME sysname, COLUMN_NAME sysname, Occurs int)
GO

SET NOCOUNT ON

DECLARE @SQL varchar(8000),
 @TABLE_NAME sysname, 
 @COLUMN_NAME sysname,
 @Sargable varchar(80), 
 @Count int

SELECT @Sargable = 'PS'

DECLARE insaneCursor CURSOR FOR 
SELECT c.TABLE_NAME, c.COLUMN_NAME 
  FROM INFORMATION_SCHEMA.Columns c INNER JOIN INFORMATION_SCHEMA.Tables t
    ON t.TABLE_SCHEMA = c.TABLE_SCHEMA AND t.TABLE_NAME = c.TABLE_NAME
 WHERE c.DATA_TYPE IN ('char','nchar','varchar','nvarchar','text','ntext')
   AND t.TABLE_TYPE = 'BASE TABLE'

OPEN insaneCursor

FETCH NEXT FROM insaneCursor INTO @TABLE_NAME, @COLUMN_NAME

WHILE @@FETCH_STATUS = 0
BEGIN
    SELECT @SQL = 'INSERT INTO myTable99 (TABLE_NAME, COLUMN_NAME, Occurs) SELECT '
            + '''' +  @TABLE_NAME + '''' + ','
            + '''' + @COLUMN_NAME + '''' + ','
            + 'COUNT(*) FROM [' + @TABLE_NAME  
            + '] WHERE [' + @COLUMN_NAME + '] Like '
            + ''''+ '%' + @Sargable + '%' + ''''
    --SELECT @SQL
    EXEC(@SQL)
    IF @@ERROR <> 0 
    ------ <> means Not Equal To
        BEGIN 
            SELECT @SQL
            SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = @TABLE_NAME
            GOTO Error
        END 
    FETCH NEXT FROM insaneCursor INTO @TABLE_NAME, @COLUMN_NAME
END

SELECT * FROM myTable99 WHERE Occurs <> 0 


Error:
CLOSE insaneCursor
DEALLOCATE insaneCursor

GO

DROP TABLE myTable99
GO

SET NOCOUNT OFF

Answer 1

不要使用游标，类似这样的方法应该可以正常工作：

SET NOCOUNT ON

SELECT @SQL = @SQL + 'SELECT '''+c.TABLE_NAME+''' AS [TAB], '''+c.COLUMN_NAME+''' AS [COL], COUNT(*) AS [COUNT] FROM '+c.TABLE_NAME+' WHERE '+c.COLUMN_NAME+' = '''+@SEARCHSTR+''' UNION ALL ' 
  FROM INFORMATION_SCHEMA.Columns c INNER JOIN INFORMATION_SCHEMA.Tables t
    ON t.TABLE_SCHEMA = c.TABLE_SCHEMA AND t.TABLE_NAME = c.TABLE_NAME
 WHERE c.DATA_TYPE IN ('char','varchar','text')
   AND t.TABLE_TYPE = 'BASE TABLE'

SELECT @SQL = @SQL + 'SELECT '''+c.TABLE_NAME+''' AS [TAB], '''+c.COLUMN_NAME+''' AS [COL], COUNT(*) AS [COUNT] FROM '+c.TABLE_NAME+' WHERE '+c.COLUMN_NAME+' = N'''+@SEARCHSTR+''' UNION ALL ' 
  FROM INFORMATION_SCHEMA.Columns c INNER JOIN INFORMATION_SCHEMA.Tables t
    ON t.TABLE_SCHEMA = c.TABLE_SCHEMA AND t.TABLE_NAME = c.TABLE_NAME
 WHERE c.DATA_TYPE IN ('nchar','nvarchar','ntext')
   AND t.TABLE_TYPE = 'BASE TABLE'

SELECT @SQL = SQL + 'SELECT ''END'' AS [TAB], ''END'' AS [COL], 0 AS [COUNT]'

EXEC(@SQL)