Order of "WHERE field IN" SQL query?

Question

I am using the following SQL to select records from MySQL database:

SELECT * FROM cms_product WHERE id IN (3,22,1);

The results order equals "ORDER BY id ASC", so as in example records 1,3,22 are returned. How can I get them ordered in the exact way as typed in IN clause? So ordered as 3,22,1 ? Thank you.

Answer 1

Numerous options -

CASE:

Preferred, being ANSI-92 it's portable to other databases.

  SELECT * 
    FROM cms_product 
   WHERE id IN (3,22,1)
ORDER BY CASE id
           WHEN 3 THEN 1
           WHEN 22 THEN 2
           WHEN 1 THEN 3
         END

FIND_IN_SET:

  SELECT * 
    FROM cms_product 
   WHERE id IN (3,22,1)
ORDER BY FIND_IN_SET(id, '3,22,1');

FIELD:

  SELECT * 
    FROM cms_product 
   WHERE id IN (3,22,1)
ORDER BY FIELD(id, 3, 22, 1);

Reference:

• CASE
• FIELD
• FIND_IN_SET