I'm transferring SQL statements from a Drupal 5 installation to Drupal 8, and struggling with And/Or condtions. eg given the original SQL:

    SELECT .....
    WHERE .....
          AND classes.description = "Photographer"
          AND (classoptions.description = "Name of photographer here"
           OR classoptions.description = "Not assigned").

I've translated it to:

$query = $this->dbConnection->select('classes');
$query->condition('classes.description', 'Photographer');

So far, so good. Then I need an OR condition for

$query->condition('classoptions.description', 'Name of photographer here');
$query->condition('classoptions.description', 'Not assigned');

Looking at documentation on-line, using db_or() is suggested, as in :

 ->condition('classoptions.description', 'Name of photographer here');
 ->condition('classoptions.description', 'Not assigned'));

..but this is a) deprecated, b) gives error 'db_or function not found' The replacement for db_or() is to obtain a new Condition object, but what am I supposed to do with it? The function


Will return a new Condition object, and the code

 ->condition('classoptions.description', 'Name of photographer here');
 ->condition('classoptions.description', 'Not assigned'));

Formats a Condition object with the conditions to be ORed just fine.But again, how do I incorporate this into the query?

2 Answers 2


Have a look how orConditionGroup() is used in core. For example, in ConfigEntityQueryTest it is used this way:

$query = $this->factory->get('config_query_test', 'AND');
$and_condition_1 = $query->orConditionGroup()
  ->condition('id', '2')
  ->condition('label', $this->entities[0]->label);
$and_condition_2 = $query->orConditionGroup()
  ->condition('id', 1)
  ->condition('label', $this->entities[3]->label);
$this->queryResults = $query

I am sure you can apply this to your problem.

  • Thanks. That works ( I thought I'd already tried that!) I ended up coding $query->condition('classes.description','Photographer'); $query->condition($query->orConditionGroup() ->condition('classoptions.description', $photographer) ->condition('classoptions.description', 'Not assigned')); You can also use ->where('sql snippet', args) to perform the SQL conditions in full, although this seem to go against the grain of most D8 SQL methods.
    – davem
    Jun 15, 2016 at 5:23

For the sake of completeness, this worked for me (thanks to the original poster):

$query = \Drupal::entityQuery('taxonomy_term')
  ->condition('vid', 'surface');
$group = $query->orConditionGroup()
  ->condition('field_surface_exclude', NULL, 'IS NULL')
  ->condition('field_surface_exclude', 0);
$tids = $query->condition($group)->execute();

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