opt: specify hash joins in EXPLAIN (OPT) #38827
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In EXPLAIN (OPT), joins that have no mention (like `merge` or `lookup`) are executed as hash joins. Make this explicit, for the benefit of usage outside of the opt team. Release note: None
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jordanlewis
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Jul 11, 2019
justinj
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Jul 11, 2019
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just looked at expr_format.go and peeked at a couple of the tests,
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complete! 1 of 0 LGTMs obtained (waiting on @justinj and @rytaft)
Is it? I thought we advertise the simple |
My understanding is that we were planning to deprecate simple |
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bors r+ |
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Jul 11, 2019
38663: sql: add support for NOT VALID Foreign Key constraints r=Tyler314 a=Tyler314 Implemented the support of not validating an ALTER TABLE foreign key constraint to a table. Within alter_table.go we set the validity of the foreign key reference to be unvalidated, and within shema_changer.go we then check the case where the foreign key being added is unvalidated and do not check its validity. This allows users to create a reference between two non-empty tables who's entries don't comply with the constraint when it's first added. 38827: opt: specify hash joins in EXPLAIN (OPT) r=RaduBerinde a=RaduBerinde In EXPLAIN (OPT), joins that have no mention (like `merge` or `lookup`) are executed as hash joins. Make this explicit, for the benefit of usage outside of the opt team. Release note: None Co-authored-by: craig[bot] <[email protected]> Co-authored-by: Tyler314 <[email protected]> Co-authored-by: Radu Berinde <[email protected]>
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In EXPLAIN (OPT), joins that have no mention (like
mergeorlookup) are executed as hash joins. Make this explicit, for thebenefit of usage outside of the opt team.
Release note: None