public static function countWhere (string $column, array $operatorValue, string $joinOperator="AND") : int
	{
		$joinOperator 	= static::validateOperator($joinOperator, "AND");
		$expression 	= static::generateValue($column, $operatorValue, $joinOperator);
		$sqlQuery  		= "SELECT COUNT(*) as count FROM ".static::$tableName." WHERE {$column} {$expression}";
		$resultSet 		= Database::getInstance()->query($sqlQuery);
		$row 			= Database::fetchAssoc($resultSet);
		return (int) array_shift($row);
	}