万事俱备，就差一个程序员了

摘要： SELECT 1 WHERE 2 NOT IN ( 1 ); 结果: (无列名) 1 SELECT 1 WHERE 2 NOT IN ( 1, NULL ); 结果:(无列名) SELECT 1 WHERE 1 IN ( 1 ); 结果: (无列名) 1 SELECT 1 WHERE... 阅读全文