MySQL equivalent of Oracle's SEQUENCE.NEXTVAL

Question

I need to be able to generate run a query that will return the next value of ID on the following table:

CREATE TABLE animals (
     id MEDIUMINT NOT NULL AUT         


        

Answer 1

Have a look at MariaDBs SEQUENCE Engine. With it you can generate sequences as easy as

SELECT seq FROM seq_1_to_5;
+-----+
| seq |
+-----+
|   1 |
|   2 |
|   3 |
|   4 |
|   5 |
+-----+

Details here: https://mariadb.com/kb/en/mariadb/sequence/

With this you should be able to do something like

SELECT min(seq) as nextVal FROM seq_1_to_500 
WHERE seq NOT IN (SELECT ID FROM customers)