[release-18.0] Subquery inside aggregration function (#14844)

[vitess-bot]

Description

This is a backport of #14844

[vitess-bot]

Hello @harshit-gangal, there are conflicts in this backport.

Please address them in order to merge this Pull Request. You can execute the snippet below to reset your branch and resolve the conflict manually.

Make sure you replace origin by the name of the vitessio/vitess remote

git fetch --all
gh pr checkout 14845 -R vitessio/vitess
git reset --hard origin/release-18.0
git cherry-pick -m 1 68410905fbe95be6a3f4e57379d9dfdc9cd5a0fc

[vitess-bot]

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[frouioui]

@harshit-gangal I think we can remove the line that skips the test if the binary version is below v19 on the original Pull Request: https://github.com/vitessio/vitess/pull/14844/files#diff-899212fa0272a75cb048d63fb608991ac21cfa7299e0436d6099176822013a0e

[harshit-gangal]

@harshit-gangal I think we can remove the line that skips the test if the binary version is below v19 on the original Pull Request: https://github.com/vitessio/vitess/pull/14844/files#diff-899212fa0272a75cb048d63fb608991ac21cfa7299e0436d6099176822013a0e

I removed it in this backport PR

[frouioui]

I removed it in this backport PR

I meant, we should remove it on main too.

[harshit-gangal]

I removed it in this backport PR

I meant, we should remove it on main too.

Will do it in a follow-up once this is merged.