large speed improvement of the Interval type on non-native dialects
large speed improvement of the Interval type on non-native dialects

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