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  • 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)
    );

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  • 原文地址:https://www.cnblogs.com/gavinYang/p/11197989.html
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