1. 一對多查詢
查詢departmentinfo字典下所有部門的人員數量
select * from departmentinfo a left join (select count(*) UserCount,UnitId from ReCharge where ReDate='2017-06-15' group by UnitId) b on (a.DepartMentId=b.UnitId) order by a.sort
2.將查詢出來的結果 的 某列 用逗號隔開 作為新字串
SELECT STUFF(( SELECT ',' + Name
FROM CollectDocument where archivepeople='xxxx' and z_fileno like 'N%'
FOR
XML PATH('')
), 1, 1, '') AS Name
對比
select * from CollectDocument where archivepeople='xxxx' and z_fileno like 'N%'
查詢結果：
