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16 lines
646 B
Markdown
16 lines
646 B
Markdown
---
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title: 'You can avoid many n+1 issues by using lateral joins in MySQL'
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tweet_id: '1530215268915417089'
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thread_slug: weekly-thread-2022-21
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author_username: tobias_petry
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images:
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- 'https://pbs.twimg.com/media/FTmHagcX0AEBn_k.jpg'
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created_at: 2022-05-27T15:52:04+00:00
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slug: you-can-avoid-many-n1-issues-by-using-lateral-joins-in-mysql
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---
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⚡️ Database Tip
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Sometimes you want to get e.g. the last three orders for *every* customer. Normal joins can't do that. You have to execute n+1 queries in code, which is slow!
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But with lateral joins, you can do one for-each loop join in SQL 🤯
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https://sqlfordevs.com/for-each-loop-lateral-join
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