- Document how SQL Server does MAX with VARCHAR, NVARCHAR Fixes #3760
- Document how SQL Server does MAX with VARCHAR, NVARCHAR
Fixes #3760

Change-Id: I0613eb66bfdc9d7118688c74e29c8da322c3b4db

j5int/sqlalchemy,monetate/sqlalchemy,monetate/sqlalchemy,graingert/sqlalchemy,robin900/sqlalchemy,sqlalchemy/sqlalchemy,graingert/sqlalchemy,wujuguang/sqlalchemy,zzzeek/sqlalchemy,robin900/sqlalchemy,wujuguang/sqlalchemy,j5int/sqlalchemy