帮助优化 SQL 查询以提取自定义徽章中的单词和图像数量，并统计主题发帖天数

社区 数据与报告
1

继续讨论 如何从命令行强制授予所有徽章：

亲爱的社区成员，有人能帮忙优化这个用于自定义徽章的 SQL 查询吗？

该查询统计特定类别主题中发布的单词数量和图片数量，并据此授予徽章。

如果有几位同行重新审视一下，可能会非常有帮助 :slight_smile: 非常感谢。

WITH

personal_pages AS (
  SELECT *
  FROM topics
  WHERE category_id = 17
    AND archived = false
    AND closed = false
    AND visible = true
),

word_counts AS (
  SELECT p.id as post_id,
    p.word_count as num
  FROM posts p
),

image_count AS (
  SELECT p.id as post_id,
    length(raw) * 2
      - length(replace(raw, '<img', '123'))
      - length(replace(raw, '[img]', '1234')) as num
  FROM posts p
),

summary AS (
  SELECT 
    pp.id as topic_id,
    pp.user_id as user_id,
    COUNT (DISTINCT p.created_at::date) as num_days,
    SUM (wc.num) as num_words,
    SUM (ic.num) as num_images
  FROM personal_pages pp
  LEFT JOIN users u on u.id = pp.user_id
  LEFT JOIN posts p ON p.topic_id = pp.id
                   AND p.user_id = pp.user_id
  LEFT JOIN word_counts wc ON wc.post_id = p.id
  LEFT JOIN image_count ic ON ic.post_id = p.id
  WHERE u.staged = false
    AND p.deleted_at IS NULL
  GROUP BY pp.id, pp.user_id
)

SELECT summary.*,
  CURRENT_DATE as granted_at
FROM summary
WHERE num_days >= 10
  AND num_words >= 1000
  AND num_images >= 10
2

已自行修复：

WITH summary as (

SELECT
  t.id as topic_id,
  t.created_at as created_at,
  t.user_id as user_id,
  COUNT (DISTINCT p.created_at::date) as num_days,
  SUM (p.word_count) as num_words,
  SUM (
    length(raw) * 2
      - length(replace(raw, '![IMG', '1234'))
      - length(replace(raw, '[img]', '1234'))
  ) as num_images
FROM topics t
  LEFT JOIN posts p ON p.topic_id = t.id
WHERE
    t.category_id = 17
    AND t.archived = false
    AND t.closed = false
    AND t.visible = true
    AND p.deleted_at IS NULL
    AND p.user_id = t.user_id
GROUP BY t.id

)

SELECT s.*,
  CURRENT_DATE as granted_at
FROM summary s
WHERE
    num_days >= 10
    AND num_words >= 1000
    AND num_images >= 10
ORDER BY created_at DESC