oracle數據合并求和？
select a1,count(*) from (select a1 from x union allselect a2 from x) group by a1 order by a1;
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Hi,歡迎訪問前端老白
請登陸oracle數據合并求和？
select a1,count(*) from (select a1 from x union allselect a2 from x) group by a1 order by a1;