refactor: privilege code

test: recover case

fix(query): fix sum/max/min null input

test: recover case

fix: read buf

fix:fix remove from cache issue

fix: prepare for multirow join 

fix(query):fix memory leak.

fix: db options rename

fix: fix stb meta removed issue

fix: filter not exist child tables

test: valgrind case

doc: refine based on comments

fix(stream): dispatch