*: add trace support for subquery (#11182)#11458

Merged

sre-bot merged 4 commits intopingcap:release-3.0from tiancaiamao:trace-subquery

Aug 1, 2019

+527-436

Commits on Jul 26, 2019

*: add trace support for subquery (pingcap#11182 )
tiancaiamao
committed

Commits on Jul 31, 2019

Merge remote-tracking branch 'origin/release-3.0' into trace-subquery
tiancaiamao
committed

Commits on Aug 1, 2019