notes-19-05-10

1　　mysql查找一个表中字段相同的数据  2019-05-10 15:51:03　　　

SELECT product_record_id FROM `t_warehouse_record` where document_id = 112 and document_type = 1 GROUP BY `product_record_id` HAVING COUNT(*) > 1　

　　  　　多字段

SELECT * FROM `t_warehouse_record` a WHERE 1 and a.document_id = 112 and a.document_type = 1 and a.product_record_id in (SELECT product_record_id FROM `t_warehouse_record` where document_id = 112 and document_type = 1 GROUP BY `product_record_id` HAVING COUNT(*) > 1)