Bug #69106 Workbench admin schema privileges does not like schema names with underscores.
Submitted: 30 Apr 2013 19:04 Modified: 1 May 2013 6:03
Reporter: William Wedeman Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Workbench: Administration Severity:S3 (Non-critical)
Version:Workbench 5.2.47 CE OS:Windows
Assigned to: CPU Architecture:Any

[30 Apr 2013 19:04] William Wedeman
Description:
Workbench schema privileges does not like schema names with underscores. It appears that when explicit assignment of schema with underscore is made the selection tool escapes the underscore in the schema name i.e. table_name becomes table\_name. When the grant is performed the prepared statement generates a syntax error and isolates on the `\_.  

How to repeat:
grant any privilige to a user for a schema with an underscore in it.

Suggested fix:
Not sure. Possibly the escape is no longer necessary since last release. Another option would be a command preview that allows the generated command to be changed before execution like development side uses.
[1 May 2013 6:03] MySQL Verification Team
Thank you for the bug report, duplicate of http://bugs.mysql.com/bug.php?id=68175