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engine: add force index to joins #77

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ShimmerGlass
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innodb sometimes selects a query plan order that is not optimized. we
force the indexes used to remedy that

innodb sometimes selects a query plan order that is not optimized. we
force the indexes used to remedy that
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@jmbass jmbass left a comment

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LGTM but I'd still like to benchmark this on a future PR.

You removed redundant indexes from the DB in this PR, so we might not need to force them any longer.

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@clems4ever clems4ever left a comment

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I did not know that we could force an index. Nice!

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