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摘要： Using Network Service DiscoveryCreating P2P Connections with Wi-FiUsing Wi-Fi P2P for Service DiscoveryUsing Network Service Discovery来源：http://develo... 阅读全文

摘要： 17.更新和删除数据更新： update table set columns = ‘value’ where ...mysql> update pw_price set price=10000 where uid=6;Query OK, 1 row affected (0.03 sec)Rows m... 阅读全文

摘要： 16 插入 insert into table values（）mysql> insert into pw_price values (5,5000,'cai');Query OK, 1 row affected (0.03 sec)mysql> select * from pw_price;\+-... 阅读全文

摘要： 15.组合查询 unionmysql> select uid,first_name,price from pw_price where uid >2 union select uid,first_name,price from pw_price where price>=1000;+-----+--... 阅读全文