select f(c1,c2) as t1,f(t1,c3) as t2,f(t2,c4) as t3 from table1 select f(c1,c2) as t1,f(t1,c3) a
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一个公式计算查询问题，急求啊
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select f(c1,c2) as t1,f(t1,c3) as t2,f(t2,c4) as t3 from table1 select f(c1,c2) as t1,f(t1,c3) a
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