Question

I’m not sure if this is possible with an SQL query alone, but I basically want to create a table like this but with a condition on the course type field that stores ‘futher’ or ‘higher’ as a number based on what the ‘course_type’ is:

CREATE TABLE IF NOT EXISTS `courses_index` (
     `id` int(11) NOT NULL AUTO_INCREMENT,
      `title` text COLLATE utf8_unicode_ci NOT NULL,
      `url` text COLLATE utf8_unicode_ci NOT NULL,
      `further` int(1) NOT NULL,
      `higher` int(1) NOT NULL,
      PRIMARY KEY (`id`),
      FULLTEXT `index` (title, url, course_type)
) AS SELECT title, url, course_type FROM `courses`

My course_type field on the courses table is a standard text field that will contain a string such as "Higher, Further" or "Further".

I want to be able to say if this course_type field is LIKE %higher% then the value of the row is 1. Likewise if the value of course_type is LIKE %higher%further then both fields are stored as a 1, etc.

Is this possible by means of creating a temporary table, or a clever MySQL query?

Many thanks in advance

Tim

Answer 1

The following should work:

CREATE TABLE ...
AS 
SELECT title, 
       url, 
       CASE
         WHEN course_type LIKE '%Further%' THEN 1
         ELSE 0
       END as further,
       CASE
         WHEN course_type LIKE '%Higher%' THEN 1
         ELSE 0
       END as higher
  FROM `courses`

EDIT fixed broken syntax

See also this sqlfiddle