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if (datetimepicker33.Enabled=true) and (datetimepicker34.Enabled=true) then
  begin
  zhanneisj:=datetostr(datetimepicker33.Date)+' '+timetostr(datetimepicker34.Time);
  end
  else
  begin
  zhanneisj:='';
  end;
if (datetimepicker31.Enabled=true) and (datetimepicker32.Enabled=true) then
  begin
  zhuangjssj:=datetostr(datetimepicker31.Date)+' '+timetostr(datetimepicker32.Time);
  end
  else
  begin
  zhuangjssj:='';
  end;
sql:='update dzhyb set chezhong='''+chezhong+''','daozhan='''+daozhan+''',zhuangjssj='''+zhuangjssj+''',zhanneisj='''+zhanneisj+''' where id='+(trim(edit23.Text))+'';
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