*more* tweaks to avoid DEFAULT VALUES on sqlite
*more* tweaks to avoid DEFAULT VALUES on sqlite

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