planner: privilege check for SELECT INTO OUTFILE (#19553)#19577

Merged

ti-srebot merged 4 commits intopingcap:release-4.0from ti-srebot:release-4.0-baf09916b957

Sep 1, 2020

+11-1

Commits on Aug 28, 2020

cherry pick pingcap#19553 to release-4.0

Null not nil
authored and
ti-srebot
committed

Commits on Sep 1, 2020