planner,executor: fix 'select ...(join on partition table) for update' panic (#21148)#25502

Merged

ti-chi-bot merged 2 commits intopingcap:release-5.1from ti-srebot:release-5.1-0490590b014c

Jun 17, 2021

+370-45

Commits on Jun 16, 2021

cherry pick pingcap#21148 to release-5.1

tiancaiamao
authored and
ti-srebot
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Commits on Jun 17, 2021

Merge branch 'release-5.1' into release-5.1-0490590b014c
ti-chi-bot
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