- Tweaked error messaging for unbound DDL().execute()
- Tweaked error messaging for unbound DDL().execute()

elelianghh/sqlalchemy,wujuguang/sqlalchemy,olemis/sqlalchemy,davidjb/sqlalchemy,olemis/sqlalchemy,dstufft/sqlalchemy,sqlalchemy/sqlalchemy,halfcrazy/sqlalchemy,Akrog/sqlalchemy,epa/sqlalchemy,sandan/sqlalchemy,276361270/sqlalchemy,davidjb/sqlalchemy,wfxiang08/sqlalchemy,graingert/sqlalchemy,elelianghh/sqlalchemy,davidfraser/sqlalchemy,Cito/sqlalchemy,robin900/sqlalchemy,bdupharm/sqlalchemy,inspirehep/sqlalchemy,alex/sqlalchemy,bootandy/sqlalchemy,276361270/sqlalchemy,halfcrazy/sqlalchemy,wujuguang/sqlalchemy,itkovian/sqlalchemy,ThiefMaster/sqlalchemy,Cito/sqlalchemy,EvaSDK/sqlalchemy,EvaSDK/sqlalchemy,wfxiang08/sqlalchemy,hsum/sqlalchemy,monetate/sqlalchemy,brianv0/sqlalchemy,davidfraser/sqlalchemy,alex/sqlalchemy,inspirehep/sqlalchemy,graingert/sqlalchemy,ThiefMaster/sqlalchemy,Akrog/sqlalchemy,j5int/sqlalchemy,j5int/sqlalchemy,brianv0/sqlalchemy,epa/sqlalchemy,robin900/sqlalchemy,zzzeek/sqlalchemy,itkovian/sqlalchemy,pdufour/sqlalchemy,sandan/sqlalchemy,Cito/sqlalchemy,bdupharm/sqlalchemy,bootandy/sqlalchemy,hsum/sqlalchemy,dstufft/sqlalchemy,monetate/sqlalchemy,alex/sqlalchemy,WinterNis/sqlalchemy,pdufour/sqlalchemy,WinterNis/sqlalchemy