In the file logback-0.9.28\logback-classic\src\main\java\ch\qos\logback\classic\db\dialect\mssql.sql, the type of DECIMAL(40) is invalid in SQL Server 2005. I had to change it to 38 to create the table.

I apologize if this is a duplicate. I did a search and couldn't find any relevant bugs, but noticed in the source file the following commnet:

– The event_id column type was recently changed from INT to DECIMAL(40)
– without testing.