Regex to extract first part of string in Apache Pig -


i need extract post code district input data below

ab55 4 dd7 6ll dd5 2hi

my code 

a = load 'data' postcode:chararray; b = foreach { code_district = regex_extract(postcode,'<some exp>',1); generate code_district; }; dump b;

output should like

ab55 dd7 dd5

what should regular expression extract first part of string?

can try below regex?

option1:

a = load 'input' postcode:chararray; code_district = foreach generate regex_extract(postcode,'(\\w+).*',1); dump code_district;

option2:

a = load 'input' postcode:chararray; code_district = foreach generate regex_extract(postcode,'([a-za-z0-9]+).*',1); dump code_district;

output:

(ab55) (dd7) (dd5)

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