> For the complete documentation index, see [llms.txt](https://www.ducksql.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.ducksql.com/sql/undefined-3.md).

# 서브 쿼리

SELECT (SELECT..)

SELECT from (SELECT ...)

SELECT from where col in (SELECT ...)