MySQL query with multiple 'OR' statements

问题

I have a query, that I have tested outside of PHP directly on SQL and still getting the same problem

The idea being that $currentArtist is sent through using the GET method, where this value matches the value in the event_artist columns the information is displayed.

SELECT 
            *
        FROM
            `".DBN."`.`events`
        WHERE
            `event_artist1` OR `event_artist2` OR `event_artist3` = '".$currentArtist."'

    ";

The problem I have is that it is completely ignoring the WHERE part of the query. It just returns the complete table results and not the results that match $currentArtist.

I have tested $currentArtist and it works fine. I'm at a loss as to how to get the complete statement to work.

I've tried surrounding the OR statements in brackets as in:

(`event_artist1` OR `event_artist2`...) = '".$currentArtist."'

This only returns a result if the $currentArtist is equal to "1" being the first person in the Artists table where their information is stored.

Any help would be greatly appreciated.

回答1:

SELECT *
  FROM events e
 WHERE '$currentArtist' IN (e.event_artist1,e.event_artist2,e.event_artist3);

回答2:

try

SELECT * FROM `".DBN."`.`events` WHERE
            `event_artist1`= '".$currentArtist."' OR `event_artist2`= '".$currentArtist."' OR `event_artist3` = '".$currentArtist."'";

回答3:

SELECT *
FROM `".DBN."`.`events`
WHERE `event_artist1` = '".$currentArtist."' 
OR `event_artist2` = '".$currentArtist."' 
OR `event_artist3` = '".$currentArtist."'
";

Hope this helps.

来源：https://stackoverflow.com/questions/22225820/mysql-query-with-multiple-or-statements

标签

php

mysql

where-clause