SELECT 指令可用來從 MySQL 表中取得一列或多列作為輸出。下面給了一個
範例來取得一列或多列
mysql> Select * from Student; +------+---------+---------+-----------+ | Id | Name | Address | Subject | +------+---------+---------+-----------+ | 1 | Gaurav | Delhi | Computers | | 2 | Aarav | Mumbai | History | | 15 | Harshit | Delhi | Commerce | | 17 | Raman | Shimla | Computers | +------+---------+---------+-----------+ 4 rows in set (0.01 sec) mysql> Select Name,Subject from Student; +---------+-----------+ | Name | Subject | +---------+-----------+ | Gaurav | Computers | | Aarav | History | | Harshit | Commerce | | Raman | Computers | +---------+-----------+ 4 rows in set (0.00 sec)
上面的查詢從「學生」表中取得兩列「姓名」和「主題」。
mysql> Select Address from Student; +---------+ | Address | +---------+ | Delhi | | Mumbai | | Delhi | | Shimla | +---------+ 4 rows in set (0.00 sec)
上面的查詢僅從「學生」表中取得一列「地址」。
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