修改报告，添加Replies和Solved指标

[Danny_Dainton]

嘿团队 ,

我正在寻求帮助来修改此 SQL 查询，以包含类别解决方案的数量和回复的数量：

-- [params]
-- date :start_date = 2024-01-01
-- date :end_date = 2024-01-19

SELECT c.id category_id, COUNT(DISTINCT(t.id)) topics, COUNT(p.id) posts, sum(p.like_count) likes, sum(p.reads) reads
FROM categories c
INNER JOIN topics t ON (t.category_id = c.id)
INNER JOIN posts p ON (p.topic_id = t.id AND p.post_type = 1)
WHERE p.created_at BETWEEN :start_date AND :end_date
GROUP BY c.id
ORDER BY COUNT(p.id) DESC

目前该查询的输出如下，非常有用，但我想包含那些其他指标。

我尝试过调整它，但我的 SQL 技能很差 - 如果有人能给我指明方向或帮助修改查询，我将非常感激

[Danny_Dainton]

我设法在一些人工智能的帮助下完成了一些工作，这些工作适合我自己的情况（您可能需要调整 solved 的引用）。

分享最终解决方案，以防其他人也能找到使用它的方法。

第一个迭代：

-- [params]
-- date :start_date = 2024-01-01
-- date :end_date = 2024-01-19

SELECT
  c.id AS category_id,
  COUNT(DISTINCT t.id) AS topics,
  COUNT(p.id) AS posts,
  SUM(p.like_count) AS likes,
  SUM(p.reads) AS reads,
  COUNT(DISTINCT CASE WHEN tf.name = 'accepted_solution_id' THEN t.id END) AS solutions,
  COUNT(CASE WHEN p.reply_to_post_number IS NOT NULL THEN p.id END) AS replies
FROM categories c
INNER JOIN topics t ON t.category_id = c.id
INNER JOIN posts p ON p.topic_id = t.id AND p.post_type = 1
LEFT JOIN topic_custom_fields tf ON t.id = tf.topic_id AND tf.name = 'accepted_solution_id'
WHERE p.created_at BETWEEN :start_date AND :end_date
GROUP BY c.id
ORDER BY COUNT(p.id) DESC

我特定用例的最终解决方案：

-- [params]
-- date :start_date = 2024-01-01
-- date :end_date = 2024-01-19

SELECT
  c.id AS category_id,
  COUNT(DISTINCT t.id) AS topics,
  COUNT(p.id) AS posts,
  SUM(p.like_count) AS likes,
  SUM(p.reads) AS reads,
  COUNT(DISTINCT CASE WHEN ua.action_type = 15 THEN t.id END) AS solutions,
  COUNT(CASE WHEN p.reply_to_post_number IS NOT NULL THEN p.id END) AS replies
FROM categories c
INNER JOIN topics t ON t.category_id = c.id
INNER JOIN posts p ON p.topic_id = t.id AND p.post_type = 1
LEFT JOIN user_actions ua ON ua.target_topic_id = t.id AND ua.action_type = 15
WHERE p.created_at BETWEEN :start_date AND :end_date
GROUP BY c.id
ORDER BY COUNT(p.id) DESC