很明显，表达式不可用，你的表达式有错误，你好好看看应不应该用数据类型转换？还有，格式确定正确吗？

咋回事？

string condition,condition1,condition2
if trim(ddplb_1.text)="" then
    condition1="3>2"                   //此时无措
    condition2="3>2"
else
    condition1="d_icompany='"+ddplb_1.text+"'"
   condition2 ="d_ocompany='"+ddplb_1.text+"'"     //expression is not valid
end if
condition=condition1+" or "+condition2
MessageBox("Result", condition, Exclamation!)  //显示：
//d_icompany="aa"or d_ocompany="aa"
dw_1.setfilter(condition)
dw_1.filter()
dw_1.retrieve()
MessageBox("Result", condition, Exclamation!)
what's wrong????

date ldat_start,ldat_end
string ls_start,ls_end
ldat_start=uo_1.i_nvo_calendar.uf_getdate()
ldat_end=uo_2.i_nvo_calendar.uf_getdate()
ls_start=string(ldat_start)
ls_end=string(ldat_end)
dw_111.settransobject(sqlca)
dw_111.setfilter("时间>=date('"+ls_start+"') and 时间<=date('"+ls_end+"')")
dw_111.retrieve
这样就可以了