mysql问题汇总

1.org.apache.ibatis.binding.BindingException: Parameter ‘dateBefore’ not found. Available parameters are [arg1, arg0, param1, param2]
解决：mapper接口中参数加@Param注解（多个参数时）

    int selectAllCount(@Param("dateBefore")Date dateBefore,@Param("dateAfter")Date dateAfter);

2. mybatis中使用LIKE

SELECT
* 
FROM
user
WHERE
name LIKE '%'||#{name}||'%'