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最新文章列表
Oracle 多行数据合并成一行数据
方法一
SQL> WITH SHOPPING AS
2 (
3 SELECT '1' U_ID, '苹果' GOODS, '2' QTY FROM DUAL UNION ALL
4 SELECT '2' U_ID, '梨子' GOODS, '5' QTY FROM DUAL UNION ALL
5 SELECT '1' U_ID, ...
SYS_CONNECT_BY_PATH 用法
SQL> SELECT DEPTNO, SUBSTR(MAX(SYS_CONNECT_BY_PATH(ENAME, '/')), 2) PATH
2 FROM (
3 SELECT ENAME, DEPTNO, ROW_NUMBER() OVER (PARTITION BY DEPTNO ORDER BY EMPNO) RN
4 ...
connect by 例子(转)
原文地址:http://blog.163.com/termie_gongzhen/blog/static/1200243362009516114844293/?fromdm&fromSearch&isFromSearchEngine=
connect by 例子 2009-06-16 11:48:44| 分类: IT技术 | 标签: |举报 |字号大
中
小 订阅
层次查询 ...
oracle 树结构查询
SELECT RPAD(' ', 4 * (LEVEL-1), '--') || name as name,
CONNECT_BY_ROOT name "ROOT",
CONNECT_BY_ISLEAF "ISLEAF",
LEVEL,
t.*,
SYS_CONNECT_BY_PATH(t. ...
sys_connect_by_path用法(一个select语句中多条数据拼成一条数据)
创建表
create table demoTable(
id number ,
content varchar2(30)
);
测试数据
insert into demotable (ID, CONTENT)
values (1, 'content1');
insert into demotable (ID, CONTENT)
values (1, 'co ...
oracle_sql递归查询积累
一、start with.....connect by递归查询
建表语句:
CREATE TABLE D_ZONECODE
(
ID VARCHAR2(36) NOT NULL UNIQUE,
ZONECODE VARCHAR2(6) NOT NULL,
SUPERCODE VARCHAR2(6) NOT NULL,
ZONELLEVEL VARCHAR2(2) NOT ...
Oracle中使用sys_connect_by_path函数实现行转列
表结构及数据展现
要实现的效果
实现sql:
select booktype ,MAX(sys_connect_by_path(t.bookname, '')) as bookname from(
select a.booktype,a.bookname,row_number() over(PARTITION BY booktype ORDER BY bookname) as r ...
SYS_CONNECT_BY_PATH函数的用法
1、脚本
create table T_TREE(
S_ID NUMBER,
F_ID NUMBER,
S_NAME VARCHAR2(20)
);
comment on column T_TREE.S_ID
is '本节点ID';
comment on column T_TREE.F_ID
is '父节点ID';
comment on column ...
Oracle函数:sys_connect_by_path
Oracle函数:sys_connect_by_path 主要用于树查询(层次查询) 以及 多列转行。其语法一般为:
select ... sys_connect_by_path(column_name,'connect_symbol') from table
start with ... connect by ... prior
依托于该语法,我们可以将一个表 ...