Last index of a given substring in MySQL

Question

We can find the index of the first occurrence of a given substring in MySQL using the INSTR() function as follows.

SELECT instr(\'Have_a_good_da         


        

Answer 1

While the above codes work successfully for a single character, they failed when I used them to find the last occurrence of a substring. I therefore recommend the code below for this task:

SELECT LENGTH("my father is my father")
        - LOCATE('father', REVERSE("my father is my father"))-(LENGTH('father')-1)

This should return 17