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A comment on For Want of a JOIN. Parent comment

Re:For Want of a JOIN by bb88 on Thursday December 22, 2022 @03:47PM (#34098452)
In one case it might just be slow. In the other your db will fall over. Unfortunately, you may find the answer when your production environment fails.
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Re:For Want of a JOIN by ttfkam on Thursday December 22, 2022 @10:50PM (#34102163)
If you have a single DB instance in production, something has already gone wrong.

Read replicas.

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