[Mediawiki-l] collation latin1_bin

[a@kid]

Is it normal for the collation of the page_title and page_touched  
fields in the page table to be set to  latin1_bin while there is no  
collation set for any of the other fields?

I'm asking because it seems to be preventing me from using CONCAT()   
in a mysql query on a custom special page (although it's very likely  
that my limited knowledge of mysql is actually the problem ;)

i'm getting the following mysql error message:
#1267 - Illegal mix of collations (latin1_bin,IMPLICIT) and  
(utf8_unicode_ci,COERCIBLE) for operation 'like'

thanks