1.表结构 CREATE TABLE folder( id BIGINT(20) NOT NULL, parent_id BIGINT(20) DEFAULT NULL, PRIMARY KEY id ); 2.根据传入id查询所有子节点及其的id 创建函数: CREATE FUNCTION `getParList`(rootId BIGINT) RETURNS varchar(1000) BEGIN DECLARE sTemp VARCHAR(1000); DECLARE s
今天一位同事咨询Devexpress TreeList控件绑定自动显示父子节点对像,但结果是不会显示带父子节点关系,而是将所有的节点作为父节点显示出来了,对像类的代码如下 public class Item:XPBaseObject { public Item() : base() { } public Item(Session session) : base(session) { } [Key(true)] public int Id{ get;set; } public string Nam
包含mysql 递归查询父节点 和子节点 mysql递归查询,查父集合,查子集合 查子集合 --drop FUNCTION `getChildList` CREATE FUNCTION `getChildList`(rootId varchar()) RETURNS varchar() BEGIN DECLARE str varchar(); DECLARE cid varchar(); SET str = '$'; SET cid = rootId; WHILE cid is not null
原文:[C#]wpf查找父子节点 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Media; namespace TestSeagate.Common { class UIAssociate { /// <summary> /
1.查询某节点下所有后代节点(包括各级父节点) 1 // 查询id为101的所有后代节点,包含101在内的各级父节点 2 select t.* from SYS_ORG t start with id = '101' connect by parent_id = prior id 2.查询某节点下所有后代节点(不包含各级父节点) 1 select t.* 2 from SYS_ORG t 3 where not exists (select 1 from SYS_ORG s where s.
通过子节点向根节点追朔. select * from persons.dept start with deptid=76 connect by prior paredeptid=deptid 通过根节点遍历子节点. select * from persons.dept start with paredeptid=0 connect by prior deptid=paredeptid 可通过level 关键字查询所在层次. select a.*,level from persons.dept a