业务场景:
数据库里面某个字段保存了多个值,例如按逗号分隔
如图下所示:
要筛选出包含4.2的的值
1、 LIKE方式查询:
SELECT truck_length FROM tms_cargo t WHERE ( loading_type = 1 AND ( truck_length = '4.2' OR truck_length LIKE '4.2,%' OR truck_length LIKE '%,4.2,%' OR truck_length LIKE '%,4.2' ) );
2、正则表达式查询:
SELECT truck_length FROM tms_cargo WHERE loading_type = 1 AND truck_length REGEXP '^4.2,|,4.2,|,4.2$|^4.2$'