ddl: fix db charset modification panic in an upper ... (#19286)#19301

Merged

zz-jason merged 6 commits intopingcap:release-3.0from ti-srebot:release-3.0-d464a27b3c6e

Sep 1, 2020

+8-1

Commits on Aug 19, 2020

cherry pick pingcap#19286 to release-3.0

tangenta
authored and
ti-srebot
committed

Commits on Aug 20, 2020

Merge branch 'release-3.0' into release-3.0-d464a27b3c6e
AilinKid
authored

Commits on Aug 26, 2020

Commits on Sep 1, 2020