I don't know your PRAGMA code, but in general this is a possible solution.

The only thing where I'd like to comment is that DBI allows and you should use a $dbh->begin_work and a $dbh->commit instead of $dbh->do( "BEGIN" ) and $dbh->do( "COMMIT" );

In reply to Re^4: Efficient way to handle huge number of records? by leuchuk
in thread Efficient way to handle huge number of records? by Anonymous Monk

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