I created a Entity with two list properties mapped many to many.
Following query results in a SqlException.
ERROR ADOExceptionReporter:378 - The column 'EntityAId' was specified multiple times for 'query'.
This error occurs at least for MsSql2005Dialect and MsSql2008Dialect, MsSql2012Dialect works fine.
I did not test any other dialects.
I will provide a failing test case soon.