This isn’t book, and I personally don’t know any other similar books since I’m a newbie to SQL but reading reviews on Amazon will tremendously help!
Update: I did the youtube video below.
https://www.youtube.com/watch?v=7S_tz1z_5bA&t=9509s
Mosh also has a 10 hour paid version on his website. But I think the free video above is enough for an Actuary.
I am also considering the book below to keep on the bookshelf as a handy reference:
Looks like the most popular SQL book on Amazon.
SQL QuickStart Guide, bought it off Amazon.
Link: