Question

$sql = 'SELECT have_show FROM `date` WHERE DATE(`date`.day) = ?';
$this->db->query($sql, array($date));            //works fine  

This works fine as expected.

$sql = 'SELECT actors, visitors, tickets, have_show FROM show
            JOIN `date` ON show.day = `date`.id
            WHERE DATE(`date`.day) = ?';

$this->db->query($sql, array($date));

here, with joined statements it gives 0 results.

db schema

id(AI)     day(INT FK-date.id)    actors(INT)    visitors(INT)  
  1                 2                   3               45               

id(AI)     day(DATE)               have_show(BOOLEAN)
  1       2012-12-06                       0
  2       2012-12-07                       1

codeigniter’s active records does the same.

Any of you ever suffered from this kind of poblems?

Answer 1

try this one

     $sql = 'SELECT actors, visitors, tickets, acts FROM `show`
        JOIN `date` ON show.day = date.id
        WHERE DATE(date.day) = ?';

    $this->db->query($sql, array($date));

you have mixed between date.day and date.id.

or maybe u have show.id not show.day so look what u have in your table and if yes

replace in your sql show.day by show.id

EDIT:

     $sql = 'SELECT s.day s.actors, s.visitors, s.tickets, s.acts d.day FROM `show` s
        JOIN `date` d ON s.day = d.id ';