mysql 从表创建 View 并排序

Question

我有一张 table id、数字、语言、短语

每个数字都有多个条目，例如

     1, 01, de, Hallo
     2, 01, en, Hello
     3, 01, fr, Salut,
     4, 02, de, Guten Tag
     5, 02, en, Good Day
     ..

语言数量是固定的

如何创建数据排列如下的 View

    id, de, en, fr 
    1, Hallo, Hello, Salut
    2, Guten Tag, Good Day, ''

Answer 1

select number,
       max(case when lang = 'de' then phrase end) as de,
       max(case when lang = 'en' then phrase end) as en,
       max(case when lang = 'fr' then phrase end) as fr
from your_table
group by number