关于Sql Server数据库提高查询效率的语法

PS：单表的重整碎片索引很简单
语法如下： DBCC DBReindex(’ A.dbo.C ')//A : 数据库 C ：数据库表

重建所有表的索引和碎片语法如下：

Use [数据库名称]
Go
DECLARE @DBCCString NVARCHAR(1000)
DECLARE @TableName VARCHAR(100)
DECLARE Cur_Index CURSOR
FOR
SELECT Name AS TblName
FROM sysobjects
WHERE xType='U'
ORDER BY TblName
FOR READ ONLY
OPEN Cur_Index
FETCH NEXT FROM Cur_Index
INTO @TableName
WHILE @@FETCH_STATUS=0
BEGIN
SET @DBCCString = 'DBCC DBREINDEX(@TblName,'''')WITH NO_INFOMSGS'
EXEC SP_EXECUTESQL @DBCCString,N'@TblName VARCHAR(100)', @TableName
PRINT '重建表' + @TableName +'的索引........OK!'
FETCH NEXT FROM Cur_Index INTO @TableName
END
CLOSE Cur_Index
DEALLOCATE Cur_Index
PRINT '操作完成！'
go


DBCC UPDATEUSAGE(0);