459479 - An error occured in a database query!

Status: VERIFIED DUPLICATE of bug 459198

Description

[Tony-E]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3

Attempting to display a forum post whilst logged in generates a database error. I see the error every time.
This is similar to the error that occured in Bug 452953 but this time I have not seen the error whilst displaying the list of posts, it only appears when trying to access a post.

Sample error:
An error occured in a database query!

Context:
File	tiki-view_forum_thread.php
Url	tiki-view_forum_thread.php?comments_parentId=181972&forumId=1
Query:
select `groupName` from `users_usergroups` where `userId`=?
Values:
0	194
Message:
MySQL server has gone away
Built query was probably:
select `groupName` from `users_usergroups` where `userId`='194'


Reproducible: Always

Comment 2

[Stephen Donner [:stephend]]

Verified dupe.