regex - prints blank space while using regex_extract method in pig -


i want split string area conversion.i have data this.

(149sq.yards) (151sq.yards) (190sq.yards) (190sq.yards) 

i want split the above data this.

149  sq.yards 151  sq.yards 

i tried following code.

a = load '/user/ahmedabad/makkan_propertydetails_apartment_ahmedabad.csv' using pigstorage('\t') (sourcewebsite:chararray,propertyid:chararray,listedon:chararray,contactname:chararray,totalviews:int,price:chararray,priceperarea:chararray,noofbedrooms:int,noofbathrooms:int,floornoofproperty:chararray,totalfloors:int,possession:chararray,builtuparea:chararray,furnished:chararray,ownership:chararray,newresale:chararray,facing:chararray,title:chararray,propertyaddress:chararray,nearbyfacilities:chararray,propertyfeatures:chararray,sellerinfo:chararray,description:chararray); b = foreach generate builtuparea;  c = filter b (builtuparea matches '.*sq.yards.*'); d = foreach c generate (bigdecimal) regex_extract(builtuparea,'(.*)', 1) * 9;    

while dump d .it prints null.

the regex mentioned match characters, try multiply (149sq.yards * 9). reason null in output.

the below regex split numbers alone input , multiply (149 * 9).

d = foreach c generate (bigdecimal) regex_extract(builtuparea,'(^[0-9]+)', 1) * 9; dump d;