Which system variable tells how far into the rest of each incomplete plan the optimizer should look to evaluate whether it should be expanded further?(a) optimizer_prune_level(b) optimizer_search_depth(c) optimizer_search(d) optimizer_pruneI have been asked this question at a job interview.I would like to ask this question from MySQL Query Optimizer in division Query Optimization of MySQL

Which system variable tells how far into the rest of each incomplete p

1.	Which system variable tells how far into the rest of each incomplete plan the optimizer should look to evaluate whether it should be expanded further?(a) optimizer_prune_level(b) optimizer_search_depth(c) optimizer_search(d) optimizer_pruneI have been asked this question at a job interview.I would like to ask this question from MySQL Query Optimizer in division Query Optimization of MySQL
Answer» The correct option is (B) optimizer_search_depth For explanation: In MySQL, the optimizer_search_depth SYSTEM variable tells how FAR into the “future” of each incomplete plan the optimizer should look to EVALUATE whether it should be EXPANDED further.

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