?
需要统计各种交通方式及各自使用的频率,可用如下语句
SELECT 'train'=count(case tripmode when '0' then tripmode else null END), ?'coach'=count(case tripmode when '1' then tripmode else null END), ?'bus'=count(case tripmode when '2' then tripmode else null END), ?'servecar'=count(case tripmode when '3' then tripmode else null END) ?, ?'other'=count(case tripmode when '4' then tripmode else null END)
?--统计函数 ?FROM ServiceWarrantyForm swf ?WHERE swf.tripmode IS NOT NULL AND swf.agenttree=@agentTree AND swf.gotodestinationtime>=@starttime AND ?swf.endservicetime<=@endtime
(编辑:李大同)
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