How does the UNNEST operator work in SQL?

S

Sergey2021-09-20 20:27:05

SQL

Sergey, 2021-09-20 20:27:05

Good afternoon.

I can't figure out how the UNNEST operator works.
Can you link to a good description or describe how it works step by step?

Thanks

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1 answer(s)

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kalapanga, 2021-09-20
@kalapanga

Description here https://www.postgresql.org/docs/13/functions-array.html
Well, for example here https://habr.com/ru/post/280912/ Example 2 about it