zoukankan      html  css  js  c++  java
  • oracle行转列和列转行(pivot 和 unpivot 函数,wm_concat函数 )

    create table demo(id int,name varchar(20),nums int); ---- 创建表
    insert into demo values(1, '苹果', 1000);
    insert into demo values(2, '苹果', 2000);
    insert into demo values(3, '苹果', 4000);
    insert into demo values(4, '橘子', 5000);
    insert into demo values(5, '橘子', 3000);
    insert into demo values(6, '葡萄', 3500);
    insert into demo values(7, '芒果', 4200);
    insert into demo values(8, '芒果', 5500);

    ---固定行转列
    select * from
    (select name,nums from demo) pivot (sum(nums) for name in ('苹果', '橘子', '葡萄', '芒果'));

    ---动态行转列
    select * from (
    select stat_time,target_code,sum(target_value) over(partition by stat_time order by target_code) as target_value from (
    select stat_time,target_code,sum(target_value) as target_value from user_data_daily
    where target_type='100001' and appkey='1400140930701' and stat_time>=date'2017-04-01' and stat_time<date'2017-06-01'
    group by stat_time,target_code
    ) order by stat_time,target_code
    )pivot xml (
    sum(target_value) for target_code in (any)
    );

  • 相关阅读:
    HDU 5313 bitset优化背包
    bzoj 2595 斯坦纳树
    COJ 1287 求匹配串在模式串中出现的次数
    HDU 5381 The sum of gcd
    POJ 1739
    HDU 3377 插头dp
    HDU 1693 二进制表示的简单插头dp
    HDU 5353
    URAL 1519 基础插头DP
    UVA 10294 等价类计数
  • 原文地址:https://www.cnblogs.com/gavinYang/p/11197989.html
Copyright © 2011-2022 走看看