EXPLAIN FORMAT=JSON: order_by_subqueries, group_by_subqueries details on subqueries in ORDER BY and GROUP BY

(Sveta Smirnova) Another post in the EXPLAIN FORMAT=JSON is Cool! series! In this post, we’ll discuss how the EXPLAIN FORMAT=JSON provides optimization details for ORDER BY and GROUP BY operations in conjunction with order_by_subqueries and group_by_subqueries.

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