如何恢复表格单元格中的数据（保存为数组）

Question

我将用户的权限保存在数据库中作为表数组

user    user_right (varchar 255) 

1       ["write","delete"]
2       ["write","delete","update"]
3       ["add","write","delete"]
4       ["write"]

我想知道如何列出user_right列中的数据吗？

select ... from users where id = 1

有一个看起来像这样的列表

write
delete