【项目】模糊查询+排序

项目需求：查询上课班信息，把班名排序，汉字英文按照首字母英文字母表排序，数字放在汉字、英文前

 

思路：直接用SQL查询出数据，然后排序

mapper中的代码：

 
        
        SELECT
            t.teachclass_name AS teachclassName,
            t.teachclass_code AS teachclassCode,
            t.course_id AS courseId,
            t.teacher_id AS teacherId,
            t.capacity,
            t.school_year AS schoolYear,
            t.remain_capacity AS remainCapacity
        FROM
            tt_teachclass t
        
            
                
                    /*如果有查询条件，则按条件查询*/
                   t.teachclass_code LIKE #{_strLike} OR t.teachclass_name LIKE #{_strLike}
                
                
                    /*如果没有查询条件，则直接查询*/
                   t.teachclass_code != '' AND
                   t.teacher_id=#{teacherId}
                
            
            AND t.school_year=#{schoolYear}
            AND t.is_delete = '0'
            ORDER BY
            CONVERT (teachclassName USING gbk) COLLATE gbk_chinese_ci ASC
        
    

 

注：以下代码即把查出的数据进行排序，此处的teachclassName意思是：你想以谁来排序

 ORDER BY
 CONVERT (teachclassName USING gbk) COLLATE gbk_chinese_ci ASC