Oracle_left_join_关联最新一条记录

xyk_sqlweb left join( Select g2.REASON ,g2.DEMO_ID ,g2.id From t_table g2 Where g2.ID in ( Select Max(g1.ID) From t_table g1 where g1.REASON is not null Group By DEMO_ID ) ) temp1 on temp1.DEMO
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