如何将所有行的排序规则从latin1_swedish_ci更改为utf8_unicode_ci？

I ignorantly used the default latin1_swedish_ci character encoding for all of the varchar rows in my database during development and I've determined that this is the root of the character encoding problems I've been having. In addition to that, it seems like most people these days are recommending that utf8_unicode_ci be used.I ignorantly used the default latin1_swedish_ci