1

Can anybody suggest to me how I can write a dynamic query in Drupal for the below MySQL query. Any suggestion will be appreciated.

select * from cap_pas where pas_uid not in
  (select pas_uid from cap_boat_to_pas)
2

There are many similar questions on Drupal Answers.

$subquery = db_select('cap_boat_to_pas', 'cp')
  ->fields('cp', array('pas_uid'));

$query = db_select('cap_pas', 'cp')
  ->fields('cp')
  ->condition('cp.pas_uid', $subquery, 'NOT IN');

results = $query->execute()->fetchAll();

Note: to write this in a single query (by using joins), take a look at leftJoin().

  • Thanks for your suggestion. Is there any possibility of writing this in a single query by using joins?? – Suraj Jun 7 '16 at 4:23
  • Yes. you can. I didn't try it. You can take a look on leftJoin() – Jimmy Ko Jun 7 '16 at 9:39

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