Question

If I have a users table and a question table, where one user can have multiple questions, can I return, for example,

bob | 10 questions
sam | 2 questions

with one query?

Using php with pdo for what it’s worth.

users table

userID
name
etc.

questions table

questionID
userID
question
flagged
answered
etc.

I want some fields from the users table and a count of the associated questions on the same row. if it can’t be done I’ll just use separate queries but I just thought I’d ask for the sake of having tidier code

Answer 1

Something like this:

SELECT u.*, COUNT(*) questions
FROM users u
JOIN QUESTIONS q ON u.userid = q.userid
GROUP BY u.userid

If you only want some columns from the users table, replace u.* with the list of columns you care about.