关于更新SQLserver统计信息的存储过程

1、建立t_mon_table_stat 用于存过需要更新统计信息的表

2、查找需要更新统计信息的表

insert into t_mon_table_stat
SELECT DISTINCT SP.rows/SSI.rowmodctr rowdiff,
        OBJECT_NAME(SI.object_id) AS Table_Name ,
        SI.name AS Statistics_Name ,
        STATS_DATE(SI.object_id, SI.index_id) AS Last_Stat_Update_Date ,
        SSI.rowmodctr AS RowModCTR ,
        SP.rows AS Total_Rows_In_Table ,
        \'UPDATE STATISTICS [\' + SCHEMA_NAME(SO.schema_id) + \'].[\'
        + OBJECT_NAME(SI.object_id) + \']\' + SPACE(2) + SI.name AS Update_Stats_Script ,current_timestamp,0,null
FROM sys.indexes AS SI( NOLOCK )
        INNER JOIN sys.objects AS SO( NOLOCK ) ON SI.object_id = SO.object_id
        INNER JOIN sys.sysindexes SSI( NOLOCK ) ON SI.object_id = SSI.id
                                                    AND SI.index_id = SSI.indid
        INNER JOIN sys.partitions AS SP ON SI.object_id = SP.object_id
WHERE SSI.rowmodctr > 0
        AND STATS_DATE(SI.object_id, SI.index_id) IS NOT NULL
        AND SO.type = \'U\'
        and abs(SP.rows-SSI.rowmodctr)>10000
        and (SP.rows/SSI.rowmodctr <0.4 or SP.rows/SSI.rowmodctr >2.5)
        and OBJECT_NAME(SI.object_id) not like \'%History_%\' --排除历史表
        and STATS_DATE(SI.object_id, SI.index_id)< dateadd(dd,-2,getdate()) --最近7天未更新统计信息
        and OBJECT_NAME(SI.object_id) not like \'%-%\'

　　3、创建存储过程

create procedure dbo.p_mon_upate_table_statistics
as
begin

  declare
      @datetime datetime
     set @datetime=getdate()

     declare update_tab_stat_cur cursor for select distinct table_name ,Update_Stats_Script,check_date from t_mon_table_stat
     where check_date>dateadd(dd,-1,@datetime) and check_date<dateadd(dd,1,@datetime)

     open update_tab_stat_cur

   --声明变量
   declare @sql varchar(1000)
   declare @table_name varchar(100)
   declare @check_date datetime

     fetch next from update_tab_stat_cur into @table_name ,@sql ,@check_date

   while @@FETCH_STATUS =0
     begin
     ---更新check_status状态
         update a set a.Check_Status=1 from t_mon_table_stat a where a.check_date =@check_date and a.table_name =@table_name and Check_Status in (0);

         exec(@sql)

         if @@ROWCOUNT >0
         begin
         ---更新update_Date 和 Check_Status的值
     update a set a.update_Date=getdate(),a.Check_Status=2 from t_mon_table_stat a where a.check_date =@check_date and a.table_name =@table_name and Check_Status=1;
     end
         fetch next from update_tab_stat_cur into @table_name ,@sql ,@check_date
     end

     ---关闭游标
     close update_tab_stat_cur

     ---释放游标资源
     deallocate update_tab_stat_cur
end

　　4、然后将改存储过程放到作业里面去就OK