util,executor: use MutableString as key for DecimalSet#9913

Merged

zz-jason merged 9 commits intopingcap:masterfrom XuHuaiyu:fix_sum_distinct

Apr 1, 2019

+29-49

Commits on Mar 28, 2019

Merge branch 'master' of https://github.com/pingcap/tidb into fix_sum_distinct
XuHuaiyu
committed

Commits on Mar 29, 2019

Commits on Apr 1, 2019

Merge branch 'master' into fix_sum_distinct
zz-jason
authored