mysql> insert into device set id=1,pn="abcd",descript="this is a good device";
Query OK, 1 row affected (0.01 sec)
mysql> insert into device set id=2,pn="efgh",descript="this is a good device";
Query OK, 1 row affected (0.00 sec)
11. 查看表里面的内容, 输入: select [col_name] from [table_name]
mysql> select * from device;
+------+------+-----------------------+
| id | pn | descript |
+------+------+-----------------------+
| 1 | abcd | this is a good device |
| 2 | efgh | this is a good device |
+------+------+-----------------------+
2 rows in set (0.01 sec)
12. 选择性的查询表里的内容, * 是通配符, 表示所有的, 查询单项的时候, 输入: select * from [table_name] where opiont=[value];
mysql> select * from device where id=2;
+------+------+-----------------------+
| id | pn | descript |
+------+------+-----------------------+
| 2 | efgh | this is a good device |
+------+------+-----------------------+
1 row in set (0.00 sec)
13. 选择性查询表里的内容, 输入: select [option]...[option] from [table_name] where [option]=[value];
mysql> select id,descript from device where id=2;
+------+-----------------------+
| id | descript |
+------+-----------------------+
| 2 | this is a good device |
+------+-----------------------+
1 row in set (0.00 sec)
