> For the complete documentation index, see [llms.txt](https://hezhiqiang-book.gitbook.io/mysql/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hezhiqiang-book.gitbook.io/mysql/di-yi-zhang/index-7.md).

# 第八节 集合操作符

- [8.1 UNION 和 UNION ALL](https://hezhiqiang-book.gitbook.io/mysql/di-yi-zhang/index-7/union-he-union-all.md)
- [8.2 INTERSECT 模拟](https://hezhiqiang-book.gitbook.io/mysql/di-yi-zhang/index-7/intersect-mo-ni.md)