As a shot in the dark, try adding this 

use Devel::Peek;
print "a:\n"; Dump($a); 
print "b:\n";Dump($b); 
print "c:\n";Dump($c); 
print "d:\n";Dump($d);

[download]
After each of the print series

In reply to Re: Problems with values expressed in scientific notation not being returned through DBI by huck
in thread Problems with values expressed in scientific notation not being returned through DBI by DazedConfuzed

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