单位表:t_units
select count(b.id),u.fenSuo from t_basic_user as b , t_units as u where b.unitsId = u.id group by u.fenSuo
此查询用于:查询分组后每组的总条数。
结果如下:
(属于第一派出所管理的人有1个,属于第二派出所管理的人有5个)
select count(b.id),u.fenSuo from t_basic_user as b , t_units as u where b.unitsId = u.id group by u.fenSuo