fix:return false in is ture operator if result is null

feat: physical plan add clone interface

feat(stream): distributed stream interval

refactor(stream)

enh(stream): direct sink if not dispatch

fix:return false in is ture operator if result is null

fix: get days per file for tsma

enh: remove offline scheduler info

feat(stream): snode process stream msg

test: add win32 query case

feat: vgroup manage command

feat: vnode multi version

enh(stream): use same name rule with schemaless

test:add testcase of python connector using Statement API

Test-NetConnection command is wrong