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What is a LATERAL join?

Q: What is a LATERAL join?

A **LATERAL** join lets a subquery on the right reference columns from the table on its left, evaluating per outer row — like a correlated subquery you can SELECT multiple columns from. Common for 'top N per group' (e.g. latest 3 orders per customer).

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A LATERAL join lets a subquery on the right reference columns from the table on its left, evaluating per outer row — like a correlated subquery you can SELECT multiple columns from. Common for 'top N per group' (e.g. latest 3 orders per customer).

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