What book would you recommend on writing stored functions/procedures in SQL (MySQL)?

Question

MySQL

Colleagues, advise the book after reading which it will be extremely clear how to write stored functions/procedures?
google gives very poor information (
thank you =)

Answer 1

MySQL and Stores...
Tip: Use either mysql or Stores, but not both.
The query planner does not know how to count the costs for calling the storage, calling the storage provokes an unconditional commit - these are two serious reasons to bypass the storages in mysql.
I can’t suggest a book, the above arguments are enough for me, and when I have to deal with it, then official documentation and Google.