MySQL PDO query LIKE with PIPES

问题

I have a PDO statement which is supposed to look for data with pipes around it, I have multiple id's stored in a single column. I know this isn't great but it seems the logical way to store the data.

Column content example |1|3|4|5|14|76|

So I want to find every line in the database with 3 in it. I use a php form to post or get 3

    $getthis = $_GET['getthis'];
    $sql = "SELECT * FROM table WHERE types LIKE '?' ORDER BY name";
    $q = $conn->prepare($sql);
    $q->execute('%|$getthis|%');
    while ($data = $q->fetch()) { do something }

Its not good, Ive tried various ways of doing this but I fail miserably every time.

Thanks for your help in advance and great site by the way! Its helped me loads

EDIT - Thanks for your help, I cant really change the structure unless I limit the number of sub-categories an item should be under. As this is what this column contains (so socks could be under footware[1] and footprotectors[4] and possibly 20 other subcats

Ill try this method 'find_in_set' but im confused as to why it needs to be higher than a zero?? Thanks again!

回答1:

You can use FIND_IN_SET()

SELECT * FROM table 
WHERE find_in_set('$getthis', replace(types, '|', ',')) > 0
ORDER BY name

But you really should change the DB structure!

来源：https://stackoverflow.com/questions/18850372/mysql-pdo-query-like-with-pipes