多表關聯去重查詢
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1
2
3
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select
*
from
(
select
a.*, rownum row_num
from
REP_DATA_01 a) x
where
x.row_num
in
(
select
min (rownum)
from
REP_DATA_02 t
group
by
organ_id )
|
單表去重
查詢重復數據（這句SQL只能顯示非重復數據）
select distinct organ_id from REP_DATA_01 ;