SQL性能优化第三篇之Mybatis接收多数据集(分页数据和Count数据)

废话不多说，直接上代码：

1、xml代码：

   SELECT sql_calc_found_rows 这里是字段 FROM 
        tbl_student_infomation AS tsi
        LEFT JOIN tbl_college AS tco ON tsi.college_id=tco.id
        LEFT JOIN tbl_profession AS tp ON tsi.profession_id=tp.id
        LEFT JOIN tbl_class AS tcl ON tsi.class_id=tcl.id
        WHERE 1=1
        ORDER BY tcs.score DESC,tsi.is_track DESC,tsi.sno DESC limit #{offset},#{limit};
   SELECT found_rows() as count;



    



        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
    

2、Mapper代码：

//接收用list
List getStudentManagePage(这里是传递的条件参数);

 3、service代码：

//接收用list
List getStudentManagePage(这里是传递的条件参数);

4、serviceimpl代码：

@Override
    public List getStudentManagePage(参数) {
        return tblStudentInfomationMapper.getStudentManagePage(参数);
    }

5、controller代码：

//这里是接收数据
List list = tblStudentInfomationService.getStudentManagePage(参数);
List studentManageVoList = new ArrayList();
//接收分页数据
studentManageVoList = (List)list.get(0);
//接收count数据
count = ((List) list.get(1)).get(0);

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