http://www.perlmonks.org?node_id=930494


in reply to Find odd/even elements of array

And that join could be as follows: 
select name, grade from studentTable join grades where studentTable.id
+ = grades.id and grade = 'A';

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CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In Section Seekers of Perl Wisdom