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Re: building a hash from a database

by Codon (Friar)
on May 02, 2006 at 16:10 UTC ( #546941=note: print w/ replies, xml ) Need Help??

in reply to building a hash from a database

How big of a CSV are we looking at here? If you have the memory, you could simplify with $sth->fetchall_arrarref({}) which would give you something like this:
$VAR1 = [ { 'id' => 1, 'fname' => 'John', 'lname' => 'Smith', }, { 'id' => 2, 'fname' => 'Sally', 'lname' => 'Smith', }, ];
Then with your friend map, you can massage this structure thusly:
my %hash = map { $_->{'id'} => $_ } @$data;
which would result in something along the lines of
$VAR2 = { '1' => { 'id' => 1, 'fname' => 'John', 'lname' => 'Smith', }, '2' => { 'id' => 2, 'fname' => 'Sally', 'lname' => 'Smith', }, };

Ivan Heffner
Sr. Software Engineer, DAS Lead, Inc.
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