在postgres中使用JSON，如何查询嵌套数组？

Question

我有一些带有User json列的details条记录，如下所示：

User.create(details: {accounts: [{name: 'one', id: 1}, {name: 'two', id: 2}])
User.create(details: {accounts: [{name: 'three', id: 3}, {name: 'two', id: 2}])
User.create(details: {accounts: [{name: 'three', id: 3}, {name: 'four', id: 4}])

如何查询id为2的所有记录？

Answer 1

感谢Using jsonb (PostgreSQL), how do I retrieve items with a certain value that's saved as an array?我被放在了正确的轨道上。

要匹配的查询：

User.where("? in (SELECT json_array_elements(details->'accounts')->>'id')", "2")