sessionctx/variable: change add index variable default value (#11786)#11875

Merged

sre-bot merged 3 commits intopingcap:release-2.1from crazycs520:11786-2.1

Aug 27, 2019

+2-2

Commits on Aug 26, 2019

Commits on Aug 27, 2019

Merge branch 'release-2.1' into 11786-2.1
crazycs520
authored