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I have to implement the following SQL query in Drupal.

select col1, col2, 'ABC' as col3 from Table1 where col1 = 0;

In my case, it may be something like this.

query->fields('n', array('nid', 'type',1 as 'sort_order'));

Can anyone help?

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1 Answer 1

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You can use addExpression method, which is unfortunately not chainable. The snippet that would make it work is the following.

$query = db_select('Table1', 't1')
  ->fields('t1', array('col1', 'col2');
  ->condition('col1', 0,'=')
$expression= $query->addExpression('ABC', 'col3');
$query->execute()
  ->fetchAssoc();

For more information on expressions, here is the official documentation: https://www.drupal.org/docs/7/api/database-api/dynamic-queries/expressions

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  • Hi, did you test if it is working for you ? Commented Apr 6, 2017 at 10:16
  • Great @bincy. I was just about to test it, because I hand-wrote it , without testing. Basically for future reference, you can use addExpression to do all of those non-standard selections. Commented Apr 6, 2017 at 10:19
  • Got it! That was really a new information for me.Thanks :)
    – bincy
    Commented Apr 6, 2017 at 10:21
  • Super, I've updated the asnwer with some links, you might want to take a look for future use cases :). Have a nice day Commented Apr 6, 2017 at 10:23

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