Use declarative mapping for the embedded SQL expressions example
Use declarative mapping for the embedded SQL expressions example

Change-Id: I1e778409f2d6e50dfba40bafc58e56f3625e7a27
(cherry picked from commit 7816476cdd0a6c83cdd0eeab8698c2469aa0197b)

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