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DateTime startTime=DateTime(em_1.Text) DateTime endTime=DateTime(em_2.Text) string sql sql = dw_1.GetSQLSelect()+"Where (StartTime> '"+startTime+"') and (EndTime ......
# Student(S#,Sname,Sage,Ssex) ѧÉú±í # Course(C#,Cname,T#) ¿Î³Ì±í # SC(S#,C#,score) ³É¼¨±í # Teacher(T#,Tname) ½Ìʦ±í ÇóÒ»sql: °Ñ ......
[code=select a.fyear,b.fname,sum(a.fendbal) as fendbal, '1ÔÂ'=case when fperiod=1 then sum(a.fendbal) else 0 end , '2ÔÂ'=case when fperiod=2 then sum(a.fendbal) else 0 end , & ......
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