mysql> SELECT * FROM department d -> WHERE d.d_id=1001; +------+-----------+--------------+-------------+ | d_id | d_name | function | address | +------+-----------+--------------+-------------+ | 1001 | 科技部 | 研發(fā)產品 | 3號樓5層 | +------+-----------+--------------+-------------+ row in set (0.00 sec)
這里為department表取了一個別名為d
為字段取別名
復制代碼 代碼如下:m.survivalescaperooms.com
mysql> SELECT d_id AS department_id, d_name AS department_name -> FROM department; +---------------+-----------------+ | department_id | department_name | +---------------+-----------------+ | 1001 | 科技部 | | 1002 | 生產部 | | 1003 | 銷售部 | +---------------+-----------------+ rows in set (0.00 sec)
