sql基礎--怎樣查詢單列資料
select 指定列名 from 從表中
mysql> select name from products;
+--------------------+
| name |
| bird bean bag toy |
| qunkanlu |
| qunkanlu 50 number |
| hongqi |
4 rows in set (0.00 sec)
sql基礎--怎樣查詢單列資料
select 指定列名 from 從表中
mysql> select name from products;
+--------------------+
| name |
| bird bean bag toy |
| qunkanlu |
| qunkanlu 50 number |
| hongqi |
4 rows in set (0.00 sec)