Reply To: Help with a $wpdb MySQL Query

• James

• May 26, 2016 at 2:17 pm

Hi @matthewhaigh

It depends on how you want the subfields to show up. Here’s an example if you want to show any subfields with certain value:

$rows = $wpdb->get_results($wpdb->prepare( 
    "
    SELECT * 
    FROM {$wpdb->prefix}postmeta
    WHERE
        ( meta_key LIKE %s AND meta_value = %s) OR
        ( meta_key LIKE %s AND meta_value = %s)
    ",
    'colours_%_colour', 'red',
    'images_%_type', 'type_3'
));

You can combine it with any keys and values you want. To learn more about the AND and OR syntax, please take a look at this page: http://www.hackingwithphp.com/9/3/13/multiple-where-conditions.

Also, I’m afraid this is a MySQL topic. For further support, please visit WordPress support forum or MySQL community instead.

Thanks 🙂