system/Database/Postgre/Forge.php
protected function _dropTable(string $table, bool $if_exists, bool $cascade): string
	{
		$sql = parent::_dropTable($table, $if_exists, $cascade);

		if ($cascade === true)
		{
			$sql .= ' CASCADE';
		}

		return $sql;
	}
protected function _dropTable(string $table, bool $if_exists, bool $cascade): string
	{
		$sql = parent::_dropTable($table, $if_exists, $cascade);

		if ($cascade === true)
		{
			$sql .= ' CASCADE';
		}

		return $sql;
	}
Drop Table

Generates a platform-specific DROP TABLE string

@param string  $table     Table name
@param boolean $if_exists Whether to add an IF EXISTS condition
@param boolean $cascade

@return string