MySQL - 有效地将两个select语句组合成一个结果和LIMIT

For a dating application, I have a few tables that I need to query for a single output with a LIMIT 10 of both queries combined. It seems difficult to do at the moment, even though it's not an issue to query them separately, but the LIMIT 10 won't work as the numbers are not exact (ex. not LIMIT 5 and LIMIT 5, one query may return 0 rows, while the other 10, depending on the scenario).For a dating application, I have a few tables t