select sum(shuliang)*4,sum(wancansl)*4, (sum(shuliang)*4 + sum(wancansl)*4)from biao
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怎么把两列的数据求和先每列求和 – 网络|
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select sum(shuliang)*4,sum(wancansl)*4, (sum(shuliang)*4 + sum(wancansl)*4)from biao