SQL to do a like compare against two concatenated columns...

Question

I'm trying to do a like search against two columns that house a first and last name, but people might touch like 'John Doe'
Can I do a like search against concatenated columns?
Kinda what I want to do ...
select * FROM worker_view WHERE
(LOWER(E.USUALFIRSTNAME) || ' ' || LOWER(E.LASTNAME)) LIKE '%searchstring%'
... but obviously this is not right ... any direction would be appreciated!

Answer 1

Let's take your example as test case
First name: John
Last name : Doe
Search string possibilities:
'John'
'Doe'
'John Doe'
'Doe John'SQL statement:
SELECT *
FROM   worker_view
WHERE  LOWER(E.USUALFIRSTNAME) LIKE LOWER('%searchstring%')
OR     LOWER(E.LASTNAME) LIKE LOWER('%searchstring%')
OR     LOWER(E.USUALFIRSTNAME) || ' ' || LOWER(E.LASTNAME) LOWER('%searchstring%')
OR     LOWER(E.LASTNAME) || ' ' || LOWER(E.USUALFIRSTNAME) LOWER('%searchstring%')Following would still fail:
'JohnDoe'
'DoeJohn'
'John  Doe'
'Doe  John'Hope that should be fine with your application.
- dkv