並前往https://medium.com/ntu-data-analytics-club/sql-basic-ii-%E8%B3%87%E6%96%99%E5%90%88%E4%BD%B5-%E5%9E%82%E7%9B%B4%E8%88%87%E6%B0%B4%E5%B9%B3%E9%97%9C%E8%81%AF-ef5b241aaa1f
