magento: limpiando quotes antiguas para mantener performance

quote-cleaning.sql

#PARA CUSTOMERS borrando QUOTES más antiguas de 45 días
#DELETE FROM sales_flat_quote WHERE (NOT ISNULL(customer_id) AND customer_id != 0) AND updated_at < DATE_SUB(Now(), INTERVAL 45 DAY) LIMIT 15000;
SELECT * FROM sales_flat_quote WHERE (NOT ISNULL(customer_id) AND customer_id != 0) AND updated_at < DATE_SUB(Now(), INTERVAL 45 DAY) LIMIT 15000;

#PARA NO CUSTOMERS borrando QUOTES más antiguas de 30 días.
#DELETE FROM sales_flat_quote WHERE (ISNULL(customer_id) || customer_id = 0) AND updated_at < DATE_SUB(Now(), INTERVAL 30 DAY);
SELECT * FROM sales_flat_quote WHERE (ISNULL(customer_id) || customer_id = 0) AND updated_at < DATE_SUB(Now(), INTERVAL 30 DAY) LIMIT 50000;