I have a two tables `oc_order` and `oc_customer`. I want to get customers who order more than once. This is sample: **oc_order:** order_id | cus_id | cus_name ------------------------------- 1 | 1 | Kumar 2 | 2 | Vimal 3 | 1 | Kumar 4 | 3 | Ramesh **oc_customer** cus_id | cus_name | cus_address ----------------------------------- 1 | Kumar | Chennai 2 | Vimal | Coimbatore 3 | Ramesh | Selam 4 | Deepan | Chennai 5 | Ashok | Coimbatore >For the above example i want to select only repeated order customer details only. I mean now select only `cus_id`- 1 details, because customer one order more then one time. This is the query am used SELECT * FROM oc_order o LEFT JOIN oc_customer oc ON (o.customer_id = oc.customer_id) WHERE (SELECT * FROM oc_order WHERE customer_id=o.customer_id)