planner/core: support union all for mpp. (#24287)#25051

Merged

ti-chi-bot merged 11 commits intopingcap:release-5.0from ti-srebot:release-5.0-52e89cb8bfba

Jun 21, 2021

+369-52

Commits on Jun 2, 2021

cherry pick pingcap#24287 to release-5.0

hanfei1991
authored and
ti-srebot
committed

Commits on Jun 4, 2021

Commits on Jun 10, 2021

Merge branch 'release-5.0' into release-5.0-52e89cb8bfba
hanfei1991
authored

Commits on Jun 15, 2021

planner/core: fix bug that injected proj get wrong index. (pingcap#25336 )
hanfei1991
committed

Commits on Jun 18, 2021

Commits on Jun 21, 2021