查询上级组织数据: WITH OCTE AS ( AS LVL FROM IOV_Users U LEFT JOIN IOV_Organization O ON U.OrgId=O.ID UNION ALL FROM OCTE C INNER JOIN IOV_Organization O ON C.ParentId=O.ID ) SELECT * FROM OCTE 查询下级组织数据: WITH OCTE AS ( AS LVL FROM IOV_Users U LEFT JOIN IOV_O
课程回顾 一对一关联 案例1:查询每个员工的名字和主管领导的名字 select e.ename 员工姓名,m.ename 领导姓名 from emp e join emp m on e.mgr=m.empno; 案例2: 查询主管领导名字为blake的所有员工名字 select e.ename 员工姓名,m.ename 领导姓名 from emp e join emp m on e.mgr=m.empno where m.ename='blake' 案例3:查询有商品的分类信息及上级分类信息 往
数据库与数据表的创建.修改.删除 创建数据库: Create database 数据库名 删除数据库: drop database 数据库名 修改字符集为utf8并指定校对集(mysql默认字符集为latin1): Alter databases 数据库名 default character set utf8 collate uf8_general_ci 查看mysql支持的字符集: Show character set 查看mysql支持的校对集: Show collation set 查看数
NTP 2015年8月20日 星期四 17:34 CentOS 7配置本地时区和TIME ZONE #用tzselect配置时区和time zone [root@localhost Asia]# /usr/bin/tzselect Please identify a location so that time zone rules can be set correctly. Please select a continent or ocean. 1) Africa 2) Americas 3)
无限层级结构的table1表,Id(主键),ParentId(父级id)查询某个Id的所有下级或所有上级,使用WITH AS,UNION ALL 查询 1.查询Id为1所有的下级 WITH T AS( UNION ALL SELECT a.* FROM table1 a INNER JOIN T ON a.ParentId=T.Id ) SELECT * FROM T 2.查询Id为88所有的上级 WITH T AS( UNION ALL SELECT a.* FROM table1 a INN
表名:tb_menu 内容如下: 查询ID为3的所有无限层下级会员 WITH TAS( SELECT * FROM tb_menu WHERE id=3 UNION ALL SELECT a.* FROM tb_menu a INNER JOIN T ON a.parent=T.id ) SELECT * FROM T 结果图如下: 查询Id为3所有的上级 WITH TAS( SELECT * FROM tb_menu WHERE id=3 UNION ALL SELECT a.* FROM
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net.Http; using System.Text; using System.Threading.Tasks; namespace ConsoleApp7 { class Program { static void Main(string[] args) { var data = GetData()
SELECT T1.lvl AS 'level', T2.id AS 'id', T2.zid AS 'zid', T2.self_invite AS 'selfInvite', T2.invite_code AS 'inviteCode', TM.level_define, TM.putong_num, TM.vip_num, TM.zhuguan_num, TM.jingli_num, TM.team_numFROM ( SELECT @child AS _self_invite, ( SE