PostgreSQL JSON 数组中存在键

Existance of key in JSON array in PostgreSQL

我遇到了一个我不太明白的问题。

假设我有一个名为电影的列,看起来像这样 (jsonb):

[{"title": "Pulp Fiction"}, {"tiitle": "Rambo"}]

有没有办法找到 movies 具有 object 键标题的行?

对于 Postgres 9.4:

ds=# CREATE TABLE yourtable (movie jsonb);
CREATE TABLE
ds=# \d+ yourtable 
                      Table "public.yourtable"
 Column | Type  | Modifiers | Storage  | Stats target | Description 
--------+-------+-----------+----------+--------------+-------------
 movie  | jsonb |           | extended |              | 

ds=# INSERT INTO yourtable VALUES ('[{"title": "Pulp Fiction"}, {"tiitle": "Rambo"}]');
INSERT 0 1

ds=# SELECT * FROM yourtable yt,jsonb_array_elements(yt.movies) AS movie
WHERE movie ? 'tiitle';

SO 有很多 good resources together with Postgres documentation.