分組取最新一條

select * from (select  row_number() over(partition by vjp   order by id desc ) a  ,e.* from     COOL_TBL_CHAIN_ENVIRON e) a where a.a =1

分組取 第一條

select  row_number() over(partition by “條件”   order by id desc ) a  ,e.* from     表名 e

得出結果

select * from (

select  row_number() over(partition by “條件”   order by id desc ) a  ,e.* from     表名 e

) a where a.a =1