planner: fix aggregation hint didn't work in some cases#11996

Merged

sre-bot merged 3 commits intopingcap:masterfrom foreyes:dev/fix_agg_hint

Sep 4, 2019

+70-33

Commits on Sep 3, 2019

fix agg hint
foreyes
committed
add tests
foreyes
committed

Commits on Sep 4, 2019

Merge branch 'master' into dev/fix_agg_hint
sre-bot
authored