Question

I have a column called is_thumbnail with a default value of no. I select a row based off of is_thumbnail = 'yes'

    $query = $conn->prepare("SELECT * FROM project_data 
                            WHERE project_id = :projectId 
                            AND is_thumbnail = 'yes' 
                            LIMIT 1");

There is a chance that no rows will have a value of yes. In that case, I want to select the first row with that same projectId regardless of the value of is_thumbnail

Now I know I can see what the query returns and then run another query. I was wondering if it was possible to do this in a single query or is there somehow I can take advantage of PDO? I just started using PDO. Thanks!

Example data:

id  project_id image                              is_thumbnail 
20  2          50f5c7b5b8566_20120803_185833.jpg  no
19  2          50f5c7b2767d1_4link 048.jpg        no
18  2          50f5c7af2fb22_4link 047.jpg        no

Answer 1

$query = $conn->prepare("SELECT * FROM project_data 
                            WHERE project_id = :projectId 
                            ORDER BY is_thumbnail ASC LIMIT 1");