我有一条sql语句
select aid,aa,ab,ac,(select ba from b where bid=aid) as ba, (我还想将ba/aa的结果运算后再输出) as bb from a order by aid asc select aid,aa,ab,ac,(select ba fro
select aid,aa,ab,ac,(select ba from b where bid=aid) as ba, (我还想将ba/aa的结果运算后再输出) as bb from a order by aid asc select aid,aa,ab,ac,(select ba fro
