order sql tree hierarchy

Question

What is the best way to sort a table like this:

CREATE TABLE category(
    id INT(10),
    parent_id INT(10),
    name VARCHAR(50)
);

INSERT INTO category (         


        

Answer 1

Sql

WITH CTE_Category
    AS
    (
      SELECT id, parent_id, name
      , RIGHT(name,CHARINDEX(' ',REVERSE(RTRIM(name)))-1) as ordername
      FROM Category 
    )

    SELECT id, parent_id, name FROM CTE_Category ORDER BY ordername

MySql

SELECT id, parent_id, name
FROM Category ORDER BY SUBSTRING_INDEX(name,' ',-1)