"upsert" support in update API.
"upsert" support in update API.
aparo/pyes,HackLinux/pyes,aparo/pyes,rookdev/pyes,haiwen/pyes,haiwen/pyes,rookdev/pyes,HackLinux/pyes,haiwen/pyes,aparo/pyes,mavarick/pyes,Fiedzia/pyes,Fiedzia/pyes,mavarick/pyes,jayzeng/pyes,jayzeng/pyes,Fiedzia/pyes,mavarick/pyes,jayzeng/pyes,HackLinux/pyes