How to find most popular word occurrences in MySQL?

Question

I have a table called results with 5 columns.

I\'d like to use the title column to find rows that are say: WHERE title like \'%for sale%\

Answer 1

Update

Idea taken from https://stackoverflow.com/a/17942691/98491

This query works on my machine (MySQL 5.7), however Sqlfiddle reports an error. The basic idea is that you should either create a table with numbers from 1 to maximum word occurence (like 4) in your field or as I did, use a UNION 1 .. 4 for simplicity.

CREATE TABLE products (
  `id` int,
  `name` varchar(45)
);

INSERT INTO products
    (`id`, `name`)
VALUES
    (1, 'for sale'),
    (2, 'for me'),
    (3, 'for you'),
    (4, 'you and me')
;

SELECT name, COUNT(*) as count FROM
(
SELECT
  product.id,
  SUBSTRING_INDEX(SUBSTRING_INDEX(product.name, ' ', numbers.n), ' ', -1) name
FROM
  (
    SELECT 1 AS n
    UNION SELECT 2
    UNION SELECT 3
    UNION SELECT 4
  ) AS numbers
  INNER JOIN products product
  ON CHAR_LENGTH(product.name)
     -CHAR_LENGTH(REPLACE(product.name, ' ', ''))>=numbers.n-1
ORDER BY
  id, n
)
AS result
GROUP BY name
ORDER BY count DESC

Result will be

for | 3
you | 2
me  | 2
and | 1
sale| 1