Table Users: id, login, name, age
Table views: id, date, user_id, post_id
Table other: id, timeD (date), post_id
What is already there:
SELECT date, user_id FROM public.views Where date IN (Select max(date) from public.views where post_id = 2 group by user_id)
Result: date and user_id
I need to add in request to display data about the user (login, name, age), the user id is optional and the timeD column
Example: date timeD login name age
Note: the other table may be empty and then i need to output timeD as null, for example
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Answer
Try to use left join
:
SELECT date, timeD, login, name, age FROM public.views LEFT JOIN Users ON Users.id = views.user_id LEFT JOIN other ON other.post_id = views.post_id Where date IN (Select max(date) from public.views where post_id = 2 group by user_id)