vtgate: subquery support#3923

Merged

sougou merged 5 commits intovitessio:masterfrom

sougou:sq2

Nov 18, 2018

Commits on Oct 31, 2018

Commits on Nov 17, 2018

subquery: address review comments
sougou
committed

Commits on Nov 18, 2018

subquery: final touches
sougou
committed