Question

say I had a table ie

___________________
| ID | Name | Job |
+====+======+=====+
| 01 | Fred | br  |
+====+======+=====+
| 02 | Jack | pd  |
+====+======+=====+

and I run a query like

SELECT 
CASE Job
WHEN 'br' THEN 'cleaner'
WHEN 'pd' THEN 'teacher'
ELSE Job
END as new_job
CONCAT( Name, 'is a', new_job )
FROM table

I get an error as I can’t use new_job in my concat is there anyway to do this?

Thnaks in advance 🙂

Answer 1

Wrap it as subquery:

 SELECT CONCAT( Name, 'is a', new_job ) FROM(
       SELECT Name, 
          CASE Job
          WHEN 'br' THEN 'cleaner'
          WHEN 'pd' THEN 'teacher'
          ELSE Job
          END as new_job

   FROM table ) sub