想象一下oracle，可以查dba_segments，但是这个不可靠（达梦官方连说明书都没有）

先拼接一个sql

set lineshow off
SELECT 'SELECT '||''''||OWNER||''''||' AS OWNER,'||''''||TABLE_NAME||''''||' AS TABLE_NAME,TABLE_USED_SPACE('||''''||OWNER||''''||','||''''||TABLE_NAME||''''||')*PAGE()/1024/1024.0 AS SIZE_MB 
FROM DUAL UNION' C FROM ALL_TABLES WHERE OWNER IN ('SCOTT','TEST');

然后执行输出

注意最后一个union要丢弃。

显示分区详细

set pages 100
set define off
  select sch_obj.name sch_name, 
         tab_obj.name tab_name, 
         TABLE_USED_PAGES(sch_obj.name, tab_obj.name)*(PAGE/1024) pages, 
         TABLE_USED_SPACE(sch_obj.name, tab_obj.name)*(PAGE/1024) bytes 
    from (select name, id from sysobjects where type$ = 'SCH') sch_obj, (select distinct TAB_OBJ_INNER.name, 
                 TAB_OBJ_INNER.schid 
            from sysobjects TAB_OBJ_INNER, 
                 SYSOBJECTS SCH_OBJ_INNER, 
                 SYSOBJECTS USER_OBJ_INNER 
           where TAB_OBJ_INNER.type$ = 'SCHOBJ' 
             and TAB_OBJ_INNER.subtype$ ='UTAB' 
             and TAB_OBJ_INNER.NAME not like 'CTI$%$_' 
             and TAB_OBJ_INNER.NAME not like '%$AUX' 
             and TAB_OBJ_INNER.INFO3&0x100000!=0x100000 
             and TAB_OBJ_INNER.INFO3&0x200000!=0x200000 
             and TAB_OBJ_INNER.INFO3 
                 & 0x003F not in (0x0A,   0x20,  0X13,  0X1A,   0x1B,  0x18,  0x19,  0x1C,  0x1D) 
             and (TAB_OBJ_INNER.INFO3  & 0x100000000) = 0 
             and TAB_OBJ_INNER.INFO3  & 0x003F != 13 
             and TAB_OBJ_INNER.INFO3 & 0x00C0 = 0 
             and USER_OBJ_INNER.SUBTYPE$ = 'USER' 
             and SCH_OBJ_INNER.ID = TAB_OBJ_INNER.SCHID 
             and SCH_OBJ_INNER.PID = USER_OBJ_INNER.ID 
             and SF_CHECK_PRIV_OPT(UID(), CURRENT_USERTYPE(), TAB_OBJ_INNER.ID, USER_OBJ_INNER.ID, USER_OBJ_INNER.INFO1, TAB_OBJ_INNER.ID) = 1) tab_obj 
   where sch_obj.id = tab_obj.schid  and sch_obj.name='TEST'
order by sch_name, tab_name ;

统计大对象，肯定是很多人想要的

select  top 10 sch_name, tab_name,bytes /1024 mb from (
  select sch_obj.name sch_name, 
         tab_obj.name tab_name, 
         TABLE_USED_PAGES(sch_obj.name, tab_obj.name)*(PAGE/1024) pages, 
         TABLE_USED_SPACE(sch_obj.name, tab_obj.name)*(PAGE/1024) bytes 
    from (select name, id from sysobjects where type$ = 'SCH') sch_obj, (select distinct TAB_OBJ_INNER.name, 
                 TAB_OBJ_INNER.schid 
            from sysobjects TAB_OBJ_INNER, 
                 SYSOBJECTS SCH_OBJ_INNER, 
                 SYSOBJECTS USER_OBJ_INNER 
           where TAB_OBJ_INNER.type$ = 'SCHOBJ' 
             and TAB_OBJ_INNER.subtype$ ='UTAB' 
             and TAB_OBJ_INNER.NAME not like 'CTI$%$_' 
             and TAB_OBJ_INNER.NAME not like '%$AUX' 
             and TAB_OBJ_INNER.INFO3&0x100000!=0x100000 
             and TAB_OBJ_INNER.INFO3&0x200000!=0x200000 
             and TAB_OBJ_INNER.INFO3 
                 & 0x003F not in (0x0A,   0x20,  0X13,  0X1A,   0x1B,  0x18,  0x19,  0x1C,  0x1D) 
             and (TAB_OBJ_INNER.INFO3  & 0x100000000) = 0 
             and TAB_OBJ_INNER.INFO3  & 0x003F != 13 
             and TAB_OBJ_INNER.INFO3 & 0x00C0 = 0 
             and USER_OBJ_INNER.SUBTYPE$ = 'USER' 
             and SCH_OBJ_INNER.ID = TAB_OBJ_INNER.SCHID 
             and SCH_OBJ_INNER.PID = USER_OBJ_INNER.ID 
             and SF_CHECK_PRIV_OPT(UID(), CURRENT_USERTYPE(), TAB_OBJ_INNER.ID, USER_OBJ_INNER.ID, USER_OBJ_INNER.INFO1, TAB_OBJ_INNER.ID) = 1) tab_obj 
   where sch_obj.id = tab_obj.schid  and sch_obj.name='TEST')
order by  mb desc;