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Name Type Location Description
MergeQuery::isNull function drupal/includes/database/query.inc Implements QueryConditionInterface::isNull().
SelectQuery::isNull function drupal/includes/database/select.inc Sets a condition that the specified field be NULL.
DeleteQuery::isNull function drupal/includes/database/query.inc Implements QueryConditionInterface::isNull().
UpdateQuery::isNull function drupal/includes/database/query.inc Implements QueryConditionInterface::isNull().
DatabaseCondition::isNull function drupal/includes/database/query.inc Implements QueryConditionInterface::isNull().
SelectQuery::havingIsNull function drupal/includes/database/select.inc
SelectQueryExtender::isNull function drupal/includes/database/select.inc Sets a condition that the specified field be NULL.
QueryConditionInterface::isNull function drupal/includes/database/query.inc Sets a condition that the specified field be NULL.