/**
* {@inheritdoc}
*/
protected function getAdvancedIndexOptionsSQL(Index $index)
{
if ($index->hasFlag('with_nulls_distinct') && $index->hasFlag('with_nulls_not_distinct')) {
throw new UnexpectedValueException('An Index can either have a "with_nulls_distinct" or "with_nulls_not_distinct" flag but not both.');
}
if (!$index->isPrimary() && $index->isUnique() && $index->hasFlag('with_nulls_distinct')) {
return ' WITH NULLS DISTINCT' . parent::getAdvancedIndexOptionsSQL($index);
}
return parent::getAdvancedIndexOptionsSQL($index);
}
