第1个回答 推荐于2016-09-08
使用过程，或者改变一下思路，能否转换成一个查询
select a+b from (select t1.v1 as a,t2.v2 as b from t1,t2 );本回答被提问者采纳
select a+b from (select t1.v1 as a,t2.v2 as b from t1,t2 );本回答被提问者采纳
第2个回答 2007-12-23
用临时表
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