Postgresql物化视图自行刷新

Question

我在Postgres 9.4数据库中有这个物化视图：

                 Materialized view "public.v_videolist"
  Column  |  Type   | Modifiers | Storage  | Stats target | Description
----------+---------+-----------+----------+--------------+-------------
 id       | integer |           | plain    |              |
 title    | text    |           | extended |              |
 embed    | text    |           | extended |              |
 img      | text    |           | extended |              |
 imgs     | text    |           | extended |              |
 tags     | text    |           | extended |              |
 category | text    |           | extended |              |
 vid      | bigint  |           | plain    |              |
 views    | bigint  |           | plain    |              |
 likes    | bigint  |           | plain    |              |
 unlikes  | bigint  |           | plain    |              |
 duration | integer |           | plain    |              |
 site     | integer |           | plain    |              |
Indexes:
    "i_vl_id" UNIQUE, btree (id)
View definition:
 SELECT videolist.id,
    videolist.title,
    videolist.embed,
    videolist.img,
    videolist.imgs,
    videolist.tags,
    videolist.category,
    videolist.vid,
    videolist.views,
    videolist.likes,
    videolist.unlikes,
    videolist.duration,
    videolist.site
   FROM videolist
  ORDER BY random();

此视图有时会自行刷新。没有cron工作来刷新它或类似的东西。它不时会自行刷新，我无法找到谁做到了。我完全记录了所有查询。日志中没有任何refresh materialized view。

为什么我的观点会更新？有什么建议吗？

Answer 1

可以使用此SQL语句安排作业更新统计信息：

REFRESH MATERIALIZED VIEW public.v_videolist;

您可以使用pg_cron来安排工作。