Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I have dialogs and messages. The goal is to select dialogs and their count of unreaded messages. Table messages has unread field to detect it.
I’ve tried this
SELECT *, count(unread) as nums
FROM dialogs JOIN messages ON dialogs.id=messages.dialog_id
GROUP BY dialogs.id
HAVING count(unread) <> 0
but always get total count of messages
If “unread” is, as you state, a count of unread messages, then it always has a value, even if zero, and is always included in COUNT(unread).
Try inserting a
WHERE messages.unread != 0