Data Explorer Query - add additional parameter in export

data & reporting
1

I want to have my list of “Users_Who_Replied_To_A_Topic” Include the user’s NAME.

I tried to follow a convention from another thread, which makes these Data Explorer queries include additional information but it didn’t work when I applied the same syntax.

Here’s the query I’m running right now, which only returns they “username” of those who replied to a topic…

-- https://meta.discourse.org/t/68756/8?u=sidv

-- [params]
-- topic_id :topic_id = 536

SELECT u.username
FROM badge_posts p
JOIN topics t ON p.topic_id = t.id 
JOIN users u ON p.user_id  = u.id
WHERE t.id = :topic_id
GROUP BY p.user_id,u.username
2

Add

 , u.name

After u.username in the first line.

3 Likes
3

Thanks for the quick help on this, Jay! I updated to the following, per your suggestion:

SELECT u.username, u.name
FROM badge_posts p
JOIN topics t ON p.topic_id = t.id 
JOIN users u ON p.user_id  = u.id
WHERE t.id = :topic_id
GROUP BY p.user_id,u.username

… then got this error…

PG::GroupingError: ERROR:  column "u.name" must appear in the GROUP BY clause or be used in an aggregate function
LINE 12: SELECT u.username, u.name

So I changed the query to the following and it worked like a charm! :tada:

SELECT u.username, u.name
FROM badge_posts p
JOIN topics t ON p.topic_id = t.id 
JOIN users u ON p.user_id  = u.id
WHERE t.id = :topic_id
GROUP BY p.user_id,u.username,u.name

So from my original snippet, I added the following:

To the “SELECT” line:
, u.name

To the “GROUP BY” line:
,u.name

Thanks again, @pfaffman for helping me with this syntax!

4 Likes
4

That PhD in education is finally paying off!

Nice work!

3 Likes
5

:stuck_out_tongue_closed_eyes: Yes indeed! Thanks again :wink:

2 Likes