fix to string concatenation operator courtesy Marko Mikulicic
fix to string concatenation operator courtesy Marko Mikulicic

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