CREATE TABLE #tablespaceinfo          (            nameinfo VARCHAR(50) ,            rowsinfo BIGINT ,            reserved VARCHAR(20) ,            datainfo VARCHAR(20) ,            index_size VARCHAR(20) ,            unused VARCHAR(20)          )               DECLARE @tablename VARCHAR(255);               DECLARE Info_cursor CURSOR     FOR         SELECT  ‘[‘ + [name] + ‘]‘         FROM    sys.tables          WHERE   type = ‘U‘;               OPEN Info_cursor        FETCH NEXT FROM Info_cursor INTO @tablename               WHILE @@FETCH_STATUS = 0          BEGIN               INSERT  INTO #tablespaceinfo                      EXEC sp_spaceused @tablename                FETCH NEXT FROM Info_cursor            INTO @tablename            END              CLOSE Info_cursor        DEALLOCATE Info_cursor               --创建临时表      CREATE TABLE [#tmptb]          (            TableName VARCHAR(50) ,            DataInfo BIGINT ,            RowsInfo BIGINT ,            Spaceperrow  AS ( CASE RowsInfo                               WHEN 0 THEN 0                               ELSE CAST(DataInfo AS decimal(18,2))/CAST(RowsInfo AS decimal(18,2))                             END ) PERSISTED          )           --插入数据到临时表      INSERT  INTO [#tmptb]              ( [TableName] ,                [DataInfo] ,                [RowsInfo]              )              SELECT  [nameinfo] ,                      CAST(REPLACE([datainfo], ‘KB‘, ‘‘) AS BIGINT) AS ‘datainfo‘ ,                      [rowsinfo]              FROM    #tablespaceinfo              ORDER BY CAST(REPLACE(reserved, ‘KB‘, ‘‘) AS INT) DESC                  --汇总记录      SELECT  [tbspinfo].* ,              [tmptb].[Spaceperrow] AS ‘每行记录大概占用空间（KB）‘     FROM    [#tablespaceinfo] AS tbspinfo ,              [#tmptb] AS tmptb      WHERE   [tbspinfo].[nameinfo] = [tmptb].[TableName]      ORDER BY CAST(REPLACE([tbspinfo].[reserved], ‘KB‘, ‘‘) AS INT) DESC             DROP TABLE [#tablespaceinfo]      DROP TABLE [#tmptb]