Moving a ton of data from the database server to perl to do simple comparisons is generally the wrong way to go. Learn SQL enough to do your work in the database when possible.
That, specially the second sentence, is only true op to a point. It doesn't scale. Certainly, if you have just one process accessing the database, let the database work. But what if you have a 100 servers accessing the database, it may actually pay to do as little work as possible in the database.

In reply to Re^2: Out of memory! by JavaFan
in thread Out of memory! by santhosh.yamsani

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