Postgresql 9.4 JSONB 类型，Select 按日期范围

Question

我正在从 Mongodb 迁移，并查看如何使用 jsonb 类型按范围 select，我每天有 ~2.880.000 条记录，我需要按站点和日期字段查询数据库, 我知道 select 按时间范围

SELECT * FROM stations WHERE date >= '2014-02-01' AND date <  '2014-03-01 AND station = 'AA01'

但是不知道如何查询JSONB数据类型的数据库

CREATE TABLE stations (
  id SERIAL PRIMARY KEY,
  event JSONB
);

INSERT INTO test(event) VALUES('{"station":"AA01","value":2.31,"date":"2015-01-23 18:02:48.906569865 +0000 UTC"}');
INSERT INTO test(event) VALUES('{"station":"AA02","value":4.1,"date":"2015-01-23 19:02:48.906569865 +0000 UTC"}');

我也想知道如何获得良好的性能方法，谢谢。

Answer 1

SELECT *
FROM stations
WHERE to_date(event->>'date', 'YYYY-MM-DD') 
    BETWEEN '2014-02-01' 
    AND     '2014-03-01'
AND event->>'station' = 'AA01';

Postgresql 9.4 JSONB 类型，Select 按日期范围

Postgresql 9.4 JSONB type, Select by date range

postgresql

json