I forgot to post my query:
$rows = $wpdb->get_results($wpdb->prepare(
"
SELECT *
FROM {$wpdb->prefix}postmeta
WHERE meta_key LIKE %s
AND meta_value = %s
",
'friend_partner_entry_%_show_logo_on_home', // meta_name: $ParentName_$RowNumber_$ChildName
'1' // meta_value: 'type_3' for example
));