Bug #252 mysql client comment processing seems to be bad.
Submitted: 8 Apr 2003 12:55 Modified: 26 Apr 2003 5:53
Reporter: Peter Zaitsev (Basic Quality Contributor) Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server Severity:S3 (Non-critical)
Version:4.0.12 OS:Any (all)
Assigned to: Jani Tolonen CPU Architecture:Any

[8 Apr 2003 12:55] Peter Zaitsev
Description:
It looks like mysql client does not handle comment chars escaped with `` properly.

Note both # and -- comments are broken.

How to repeat:
mysql> create table a (`po#` int);
    -> ;
ERROR 1064: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
mysql> create table a (`po-- ` int);
[26 Apr 2003 5:53] Michael Widenius
Thank you for your bug report. This issue has already been fixed
in the latest released version of that product, which you can download at 
http://www.mysql.com/downloads/

Couldn't repeat with 4.0 development tree.
(Maybe old mysql client was used ?)