Adding database agnostic extract()
Adding database agnostic extract()

bopo/peewee,lez/peewee,coleifer/peewee,bopo/peewee,coreos/peewee,softside/peewee,jnovinger/peewee,Dipsomaniac/peewee,Sunzhifeng/peewee,jarrahwu/peewee,zhang625272514/peewee,Dipsomaniac/peewee,coleifer/peewee,py4a/peewee,Sunzhifeng/peewee,mackjoner/peewee,jarrahwu/peewee,bopo/peewee,zhang625272514/peewee,new-xiaji/peewee,coreos/peewee,new-xiaji/peewee,new-xiaji/peewee,fuzeman/peewee,teserak/peewee,coleifer/peewee,jnovinger/peewee,ronyb29/peewee,ghukill/peewee,d1hotpep/peewee,coreos/peewee,fuzeman/peewee,d1hotpep/peewee,Dipsomaniac/peewee,Sunzhifeng/peewee,wenxer/peewee,stas/peewee,wenxer/peewee,zhang625272514/peewee,jarrahwu/peewee