[7.x] Solved the issue for a GROUP BY expression validation (#60558)#60569

Merged

YulNaumenko merged 1 commit intoelastic:7.xfrom YulNaumenko:backport/7.x/pr-60558

Mar 18, 2020

+226-100

Commits on Mar 18, 2020

Solved the issue for a GROUP BY expression validation (elastic#60558 )
YulNaumenko
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