planner: fix index merge union case couldn't sink limit into index merge reader#48590

Merged

ti-chi-bot[bot] merged 2 commits intopingcap:masterfrom AilinKid:fix-index-merge-union-case-downgrade-from-7.3-to-7.4

Nov 16, 2023

+41-4

Commits on Nov 14, 2023

fix index merge union case downgrade from 7.3 to 7.4 and master
AilinKid
committed

Commits on Nov 15, 2023

fmt
AilinKid
committed