我有一张表格如下:
FA_Name| SP_Name | ALIAS_Name
------------------------------
FA1 | SP1 | a1
FA1 | SP1 | a2
FA1 | SP2 | a3
FA1 | SP2 | a4
FA1 | SP3 | a5
FA1 | SP3 | a6
我想只检索给定FA_Name的每个不同“SP_Name”的第一个ALIAS_Name记录。这意味着,我必须按如下方式获取记录:
FA1 | SP1 | a1
FA1 | SP2 | a3
FA1 | SP3 | a5
请帮我写同样的SQl查询。感谢。
答案 0 :(得分:0)
我得到了同样的回答,如下:
WITH duplicate AS
(
SELECT fu_area, sp_name, analysis_name, ROW_NUMBER() OVER(PARTITION BY fu_area, sp_name
ORDER BY fu_area, sp_name, analysis_name) AS _dupe_num
FROM temp_rrr_test_111 WHERE 1=1
)
select * FROM duplicate WHERE _dupe_num = 1