if(Y6>0,ds2.select(单位成本字段,FORMAT(时间字段,"yyyy-MM")=FORMAT(today(),"yyyy-MM")),ds2.select(单位成本字段,FORMAT(时间字段,"yyyy-MM")=FORMAT(DATEDELTA(today(),-1),"yyyy-MM")))
if(T8>0,ds7单位成本.select(YX_CB_PRICE,YX_MONTH between $SMM and $DMM), ds7单位成本.select(YX_CB_PRICE,YX_MONTH between $SMM' and $DMM))