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I have a node with a list field of text values. I want to write a query that gets all nodes that don't have one of the selected values.

How do I write this query?

$query->condition('field_states_excluded', $state, 'DOES NOT CONTAIN');
  • Slightly sleep-deprived so I might be missing something - isn't that a NOT IN? Assuming $state is an array – Clive Feb 19 '18 at 21:07
  • 1
    Sounds like a NOT IN to me as well assuming $state is an array of multiple states.. It only gets complicated when you only want to filter out nodes that match/don't match on all of multiple values. Or a partial string match, aka the opposite of "CONTAIN", that would be tricky. But that seems unlikely when talking about states... – Berdir Feb 19 '18 at 22:28
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You can make use of NOT REGEXP if we assume that $state is an array of multiple states.

I will explain with example:
for example if want to get all nodes with the field title DOES NOT CONTAIN page, hello, and test.

Sql statement should be something like:

SELECT * FROM `node_field_data` WHERE `type` = 'page' AND `title`  NOT REGEXP '^.*page.*$|^.*hello.*$|^.*test.*$';

Drupal Code:

  $excluded_strings = array('page', 'hello', 'test');
  //- Add regex prefix and suffix
  $excluded_strings_with_regex = array_map(function ($val) {
    return '^.*' . $val . '.*$';
  }, $excluded_strings);
  //- Join array elements with a string | glue 
  //- result $regex_p_string = "^.*page.*$|^.*hello.*$|^.*test.*$"
  $regex_p_string = implode("|", $excluded_strings_with_regex);
  //-Build Query
  $query = \Drupal::entityQuery('node');
  $query->condition('status', 1);
  $query->condition('type', 'page');
  //- Add regex Condition.
  $query->condition('title', $regex_p_string, 'NOT REGEXP');
  $nids = $query->execute();
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The only operators supported by QueryInterface::condition() are the following:

  • =, <>, >, >=, <, <=, STARTS_WITH, CONTAINS, ENDS_WITH
  • IN, NOT IN
  • BETWEEN

You cannot use NOT REGEXP, since Drupal 8 doesn't support it, but you can use NOT IN, as @Clive and @Berdir suggested, if you have an array of values the field should not have.
Since you are talking of states, I agree with @Berdir it's more probable that is your case. I think more difficult somebody would exclude states (which are a limited set of values) using regular expressions.

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