expression: Short cut expr vec bug (#19775)#20092

Merged

ti-srebot merged 4 commits intopingcap:release-4.0from ti-srebot:release-4.0-7948c125ac9d

Sep 21, 2020

+330-31

Commits on Sep 18, 2020

cherry pick pingcap#19775 to release-4.0

fzhedu
authored and
ti-srebot
committed
Merge branch 'release-4.0' into release-4.0-7948c125ac9d
ichn-hu
authored

Commits on Sep 21, 2020