Tatsuo Ishii wrote: > >>> currently browsing the source code in src/include/tcop. What does tcop stand for? Can not find any hints in the files. > > > >>Traffic cop. > > > > Thanks > > cop mean? > > A cop means a policeman. Probably the name came from that it is > responsible for the traffic control between frontend and backend. Traffic control between utility commands and stuff that goes to the optimizer is how I understand it. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services