USE [master]GOSET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCREATE proc [dbo].[sp_rebuild_index] (  @Rebuild_Fragmentation_Percent smallint = 5  -- 當邏輯碎片百分比 > 5% 重新生成索引)asbegin  /* 調用方法：  1.針對當前實例所有數據庫：  exec sys.sp_MSforeachdb 'use ?;exec sp_rebuild_index'  2.針對當前數據庫：      exec sp_rebuild_index  */    --對系統數據庫不作重新組織索引和重新生成索引  if (db_name() in ('master','model','msdb','tempdb')) return;      --如果邏輯碎片（索引中的無序頁）的百分比 <= 5% ，就不作重新組織索引和重新生成索引  if not exists(select 1 from sys.dm_db_index_physical_stats(db_id(),null,null,null,null) a where a.index_id>0 and a.avg_fragmentation_in_percent > @Rebuild_Fragmentation_Percent) return      print replicate('-',60)+char(13)+char(10)+replicate(' ',14)+N'對數據庫 '+quotename(db_name())+N' 進行索引優化'+replicate(' ',20)+char(13)+char(10)        declare @sql nvarchar(2000),@str nvarchar(2000)    declare cur_x cursor for     select 'alter index '+quotename(a.name)+' on '+quotename(object_schema_name(a.object_id))+'.'+quotename(object_name(a.object_id))+' rebuild;' as [sql]        ,N'重新生成索引：' +quotename(object_schema_name(a.object_id))+'.'+quotename(object_name(a.object_id))+'.'+quotename(a.name) as [str]      from sys.indexes a        inner join sys.dm_db_index_physical_stats(db_id(),null,null,null,null) b on b.object_id=a.object_id          and b.index_id=a.index_id        where a.index_id>0          and b.avg_fragmentation_in_percent > @Rebuild_Fragmentation_Percent      order by object_name(a.object_id),a.index_id        open cur_x  fetch next from cur_x into @sql,@str      while (@@fetch_status = 0)  begin print @sql    exec(@sql)     print @str    fetch next from cur_x into @sql,@str          end  close cur_x  deallocate cur_x     end