1 select 2 * 3 from ( 4 select 5 max(t1.source) as source 6 ,t1.c1 7 ,t1.c2 8 ,t1.c3 9 ,count(*) as cnt 10 from ( 11 select 1 source, t11.* from dev.astron_wangluochayi_1 t11 12 union all 13 select 2 source, t12.* from dev.astron_wangluochayi_1 t12 14 ) t1 15 group by t1.source,t1.c1,t1.c2 ,t1.c3 16 having count(*) = 1 17 ) t2 18 where t2.source = 1 19 ;
未完待续