Optimize code script Qlikview

[Anonymous]

I need to optimize the following code ,I have number of rows 200 000 000 .

Is there a way to optimize it ?

let noRows = NoOfRows('CustomerTable')-1;


for i=0 to $(noRows)
  let a = peek('Customer',$(i),'CustomerTable');
    let b = peek('City',$(i),'CustomerTable');
    let c = peek('Quantity',$(i),'CustomerTable');

  GeocodeResponse:
  LOAD
  status,
  '$(a)' as CustomerName,
  '$(b)' as CustomerCity,
  '$(c)' as CustomerQuantity,
  ([result/geometry/location/lat]) as latitude,
    ([result/geometry/location/lng]) as longitude
  FROM [http://maps.googleapis.com/maps/api/geocode/xml?address=$(b)&sensor=false] (XmlSimple, Table is [GeocodeResponse]); 
next i;

[Clever_Anjos]

Maybe loading only distinct cities (fewer request, faster total load time)

LET x = FieldValueCount('City');
for i = 1 to x
  LET c = FieldValue('City',i);
   Coord:
   LOAD
   '$(c)' as City,
    ([result/geometry/location/lat]) as latitude,
    ([result/geometry/location/lng]) as longitude
  FROM [http://maps.googleapis.com/maps/api/geocode/xml?address=$(b)&sensor=false] (XmlSimple, Table is [GeocodeResponse]);

next;

LEFT join (CustomerTable)
LOAD * resident Coord;
drop table Coord;