Wrap INSERTs inside transactions to speed things up.

function printInserts(table) {

    return function(data, next) {

        console.log("START TRANSACTION;");

        data[table].map(fixBooleans).forEach(function(row) {

            console.log(db.format("INSERT INTO "+table+" SET ?;", row));

        });

        console.log("COMMIT;");

        next();

    };

}