Extract particular data from csv file to hash map

[safiqurr01]

I have a csv file with particular data in certain locations.As for example
20,3678863,Y,Si nha,Varun,51400 195, 051-40-0195,7/19/1947

3237.14,4656311 ,Y ,Goswami,Nabajy oti,77502793,07 7-50-2793,5/5/1962
I have 1000+ lines of data.
I want to extract the second and fourth data in a particular row and put it in a hash map.
My next task will be to use the second value of each record and search it in some text file.
Please help me to extract data into a hash map. so that I can continue with the rest...
Any help is really appreciated. Thanks

[toolic]

If your data itself does not contain commas, use split to grab the 2nd/4th columns:

perldoc -f split

Otherwise, search CPAN for an appropriate CSV/xSV module.