(转)SQL Server 2005索引碎片整理脚本

set nocount on
--使用游标重新组织指定库中的索引,消除索引碎片
--R_T层游标取出当前数据库所有表
declare R_T cursor
	for select name from sys.tables
declare @T varchar(50)
open r_t
fetch next from r_t into @t
while @@fetch_status=0
begin
--R_index游标判断指定表索引碎片情况并优化
declare R_Index cursor
for select t.name,i.name,s.avg_fragmentation_in_percent from sys.tables t
  join sys.indexes i on i.object_id=t.object_id
  join sys.dm_db_index_physical_stats(db_id(),object_id(@T),null,null,'limited') s
   on s.object_id=i.object_id and s.index_id=i.index_id
declare @TName varchar(50),@IName varchar(50),@avg int,@str varchar(500)
open r_index
fetch next from r_index into @TName,@Iname,@avg
while @@fetch_status=0
begin
  if @avg>=30  --如果碎片大于30,重建索引
  begin
   set @str='alter index '+rtrim(@Iname)+' on dbo.'+quotename(rtrim(@tname))+' rebuild'
  end
  else   --如果碎片小于30,重新组织索引
  begin
   set @STR='alter index '+rtrim(@Iname)+' on dbo.'+quotename(rtrim(@tname))+' reorganize'
  end
  print @str
  exec (@str)  --执行
  fetch next from r_index into @TName,@Iname,@avg
end
--结束r_index游标
close r_index
deallocate r_index
fetch next from r_t into @t
end
--结束R_T游标
close r_t
deallocate r_t
set nocount off

转自：http://blog.csdn.net/wzhibin/archive/2010/04/23/5520761.aspx做了一些小的修改