# 顶级 50 位发帖者

**URL:** https://meta.discourse.org/t/top-50-posters/275115
**Category:** Data & reporting
**Tags:** sql-query
**Created:** [2018年二月12日 13:06 UTC](https://meta.discourse.org/t/top-50-posters/275115 "2018-02-12T13:06:00Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![simon](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/simon/32/339122_2.png) [@simon](https://meta.discourse.org/u/simon)
#### Post date: [2018年二月12日 13:06 UTC](https://meta.discourse.org/t/top-50-posters/275115/1 "2018-02-12T13:06:00Z")

</div>

### 前 50 名发帖用户

返回给定月份期间的前 50 名发帖用户。结果按 post\_count 排序。它接受一个 ‘months\_ago’ 参数，默认为 0，以提供当前月份的结果。

```sql
-- [params]
-- int :months_ago = 1

WITH query_period AS (
SELECT
date_trunc('month', CURRENT_DATE) - INTERVAL ':months_ago months' as period_start,
date_trunc('month', CURRENT_DATE) - INTERVAL ':months_ago months' + INTERVAL '1 month' - INTERVAL '1 second' as period_end
),

user_posts_in_period AS (
SELECT
p.user_id
FROM posts p
INNER JOIN query_period qp
ON p.created_at >= qp.period_start
AND p.created_at <= qp.period_end
WHERE p.user_id > 0
)

SELECT
up.user_id,
count(1) as post_count
FROM user_posts_in_period up
GROUP BY up.user_id
ORDER BY post_count DESC
LIMIT 50

```