[3.3.x] Support Forum • Re: [split] No new messages but unread messages

For anyone interested the phpbb_privmsgs table stores a single copy of a PM. The phpbb_privmsgs_to table stores recipient(s) and sender information. If both the sender and recipient(s) delete the message it's removed from the phpbb_privmsgs table.

Run this before running DELETE query, this will list entries in phpbb_privmsgs_to where no message exists in phpbb_privmsgs. There shouldn't be many results for this. If you see hundreds I'd go back and compare backup table to new table.:

Code:

SELECT * FROM phpbb_privmsgs_toWHERE NOT EXISTS (    SELECT 1    FROM phpbb_privmsgs    WHERE phpbb_privmsgs_to.msg_id = phpbb_privmsgs.msg_id);

This will delete entries in the phpbb_privmsgs_to where no message exists just for your account(or any account by changing user_id):

Code:

DELETE FROM phpbb_privmsgs_toWHERE user_id = 2AND NOT EXISTS (    SELECT 1    FROM phpbb_privmsgs    WHERE phpbb_privmsgs_to.msg_id = phpbb_privmsgs.msg_id);

Assuming that solves issue for your account you can use this for everyone.

Code:

DELETE FROM phpbb_privmsgs_toWHERE NOT EXISTS (    SELECT 1    FROM phpbb_privmsgs    WHERE phpbb_privmsgs_to.msg_id = phpbb_privmsgs.msg_id);

Statistics: Posted by corleoner — Sun Jul 20, 2025 10:41 pm