update shippings set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
update purchases set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
update sales set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
update restorations set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
update samples set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
update adjustments set customer_id=NULL where warehouse_id=660 and customer_id is not NULL;
