Hi,

thanks for the response. Will using left joins and 'NULL' values give me the same response that my original query did (in the event of unlimited memory!) ?

I don't really understand the use of NULL in this instance because I have no NULL values in my database and was originally checking for where two values weren't equal.

Thanks again!

In reply to Re^2: (OT) perl, memory and mysql by Anonymous Monk
in thread (OT) perl, memory and mysql by Anonymous Monk

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