MySQL - CONCAT two fields and use them in WHERE clause

问题

As the title suggests, I was wondering how to concat two fields in a where clause in mysql. This is an example of what I'm trying to achieve :

SELECT CONCAT_WS(' ', first_name, last_name) AS name FROM `users`
WHERE name LIKE "%John Doe%"

The point is that first_name and last_name are separate fields, and I want to enable my PHP application to search for a full person's name.

Any tips?

Cheers!

回答1:

Try this ::

SELECT CONCAT_WS(' ', first_name, last_name) AS name FROM `users`
WHERE CONCAT_WS(' ', first_name, last_name) LIKE "%John Doe%"

回答2:

pick up the users as view then query outside select query

select name from (select first_name||last_name FROM `users`
    WHERE frst_name LIKE "%John%" or last name like "%doe%") where name like '%John Doe%'

来源：https://stackoverflow.com/questions/11140647/mysql-concat-two-fields-and-use-them-in-where-clause