sql 表分区信息查看

代码

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

 

代码

  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