By looking at the top 20..50 words used by a user, I hope to identify who cares about what the most, and then use the information to engage them in right topics and ask them right questions for better motivation. What tables / columns would be useful for this task? I suspect I should play with post_search_data.search_data, which is a tsvector, i.e. words and their frequencies per post. But if you think there’s a better way, please advise!

So, here it is: “Speak their language” SQL query This query fetches 60 lexemes that are most frequently used by users in their messages from last 90 days, per user. [image] Notes users are ordered by the number of words they posted in the last 90 days, most active posters first only those messages are included that were posted in the last 90 days instead of counting word tokens, the query counts lexems, so that “dogs” and “dog” are interpreted as the same word Application Control your language. I noticed I use the word “flag” too often. Maybe not a good habit for an admin who tries to be friendly! Find who cares about what the most. For instance: From the screenshot, I can see that user shcher86 used word cheese 517 times, cottage cheese 133 times and recipe 202 times. Now I know what to ask her about :wink: Admin Brovarchanka really cares about goats (353), and also uses the :wink: smile all the time. I should care more about users and goats too, rather than flags! SQL Query WITH posters AS ( SELECT SUM(p.word_count) as total_words, u.* FROM users u LEFT JOIN posts p ON p.user_id = u.id WHERE p.created_at > now()::date - 91 GROUP BY u.id ) SELECT u.id as user_id, (SELECT string_agg(word || ' - ' || nentry, ' ') FROM (SELECT * FROM ts_stat(' SELECT search_data FROM post_search_data psd LEFT JOIN posts p ON p.id = psd.post_id WHERE p.created_at > now()::date - 91 AND p.user_id = ' || u.id) ORDER BY nentry DESC, ndoc DESC, word LIMIT 60 ) freq ) as top_words FROM posters u ORDER BY u.total_words DESC LIMIT 100 Tuning LIMIT 100 limits to the top 100 posters; adjust to your needs p.created_at > now()::date - 91 limits analysis to posts in last 90 days: 91 = 90 days 90 = 89 days … and so on You have to change it in 2 places in the query LIMIT 60 limits output to 60 lexemes, that’s where you may change it if needs be Enjoy learning your users’ language! P.S. And don’t ask your users to flag too often :wink:

Well done and thanks @meglio, interesting results across a few Discourse instances. I turned this into a parametrised query for Data Explorer (@riking awesome job on this plugin!) most-used-words-per-user.dcquery (1).json (1.8 KB) -- [params] -- int :past_x_days = 90 -- int :top_x_words = 60 -- int :top_x_users = 100 WITH posters AS ( SELECT sum (p.word_count ) AS total_words, u.* FROM users u LEFT JOIN posts p ON p.user_id = u.id WHERE p.created_at > now() ::date - ( :past_x_days + 1 ) GROUP BY u.id ) SELECT u.id AS user_id, ( SELECT string_agg ( word || ' - ' || nentry, ' ' ) FROM ( SELECT * FROM ts_stat (' SELECT search_data FROM post_search_data psd LEFT JOIN posts p ON p.id = psd.post_id WHERE p.created_at > now()::date - ' || ( :past_x_days + 1 ) || ' AND p.user_id = ' || u.id ) ORDER BY nentry DESC, ndoc DESC, word LIMIT :top_x_words ) AS freq ) AS top_words FROM posters AS u ORDER BY u.total_words DESC LIMIT :top_x_users

A really cool query, but I’ve noticed some unexpected results. Words from the Category and Topic tiles are being included in top_words, 1 time for each post made in the topic. In other words, if the category is “ABC” and the topic is “XYZ” if a member makes 25 posts in various topics in the ABC category including 10 in the XXZ topic, even if they never made a post with either ABC or XYZ in it, the count will show as ABC - 25, XYZ - 10 On a positive note, words inside quotes, img tags and links don’t appear to be included.

I don’t extract words on my own - I use topic search data vector generated in PostgreSQL that Discourse builds for search purposes.

I’ve been messing with queries using posts.raw and posts.cooked but it’s tricky business to not include words in quotes, image tags etc. i.e. non-posted words - Note, this is a very buggy example regexp_matches(posts.raw, '\[quote(?:[^]])*\][^[]*\[\/quote]', 'g') I’m thinking it might be easier to subtract category and title words from those found in the post_search_data table.

So, do you think the words from category name and title are automatically added to post_search_data ? Hm that’s not good. Yes we should extract them.

[image] meglio: the words from category name and title are automatically added to post_search_data? As an example this for the default “Staff About” search_data 'admin':11 'categori':2,17 'discuss':5 'moder':13 'privat':1 'staff':4,16,18 'topic':6 'visibl':9 raw_data Private category for staff discussions. Topics are only visible to admins and moderators. About the Staff category Staff

So, I can’t see the “about” word in the data (Staff About).

Yes, there are a few words that I guess aren’t included because they aren’t considered helpful as search terms. I can see the logic for not including “for”, “are”, “only”, “to”, “and”, “the” and the like. But I am a bit surprised “about” isn’t considered a word that might be searched for

List of stop words here for reference: https://apt-browse.org/browse/ubuntu/trusty/main/i386/postgresql-9.3/9.3.4-1/file/usr/share/postgresql/9.3/tsearch_data/english.stop The idea is that these words appear in “most” English “texts” regardless of subject.

@Mittineague, back to your example, I still can’t understand where is the issue. There are only 3 indexes for the word staff: 'staff':4,16,18 They can all be found in the text: Private category for staff discussions. Topics are only visible to admins and moderators. About the Staff category Staff No “staff” word is taken from “Staff About”. Or did I misinterpret your explanations?

SQL: The most N used words per user (speak their language!)

Community Building Data & reporting

meglio (Anton) April 11, 2016, 3:22am 17

The solution would be to create a ts_vector from category title and topic title and subtract that vector from the result, per-topic.

Topic		Replies	Views
Understanding what our users are posting about Data & reporting sql-query	9	540	June 20, 2024
SQL query in Data Explorer to pull latest topics? Data & reporting sql-query	10	3038	June 6, 2017
Top X posters in a given timeframe Data & reporting sql-query	3	296	May 28, 2024
See what categories new users (& other trust levels) post in most Data & reporting sql-query	3	1991	February 13, 2018
User-posted code blocks in a category Data & reporting sql-query	3	402	May 13, 2024

SQL: The most N used words per user (speak their language!)

Related topics