sql 表分区信息查看

create procedure [dbo].[sp_show_partition_range]
(
   @partition_table    nvarchar(255) = null
  ,@partition_function nvarchar(255) = null
)
as
begin
   set nocount on

   declare @function_id int
       set @function_id = null

   -- get @function_id base on @partition_table
   if len(@partition_table) > 0 begin
      select @function_id = s.function_id
        from sys.indexes i
                inner join sys.partition_schemes s
          on i.data_space_id = s.data_space_id
       where i.index_id < 2
         and i.object_id = object_id(@partition_table)
         
      if @function_id is null
         return 1         
   end

   -- get @function_id base on @partition_function
   if len(@partition_function) > 0 begin
      select @function_id = function_id
        from sys.partition_functions
       where name = @partition_function
       
      if @function_id is null
         return 1        
    end
   

   -- get partition range
   select partition_function = f.name
         ,t.partition
         ,t.minval
         ,value = case when f.boundary_value_on_right=1 then '<= val <' else '< val <=' end
         ,t.maxval
     from (
           select h.function_id
                 ,partition = h.boundary_id
                 ,minval    = l.value
                 ,maxval    = h.value
             from sys.partition_range_values h
                     left join sys.partition_range_values l
               on h.function_id = l.function_id and h.boundary_id = l.boundary_id + 1

           union all

           select function_id
                 ,partition = max(boundary_id) + 1
                 ,minval    = max(value)
                 ,maxval    = null
             from sys.partition_range_values
            group by function_id
          ) t
              inner join sys.partition_functions f
         on t.function_id = f.function_id
      where f.function_id = @function_id
         or @function_id is null
      order by 1, 2
end

 

  查看分区区间：
     sp_show_partition_range  'SO_Tb_Ps'  --表名

  

查看表分区数据分布情况

 

 select 分区编号 = $partition.PF_SO(OrderDate)
      ,行数      = count(*)
      ,最小值    = min(OrderDate)
      ,最大值    = max(OrderDate)
  from dbo.SO
 group by $partition.PF_SO(OrderDate)
 order by 1
 --PF_SO为表分区函数