FIRST() 函数返回指定的列中第一个记录的值。
SELECT FIRST(column_name) FROM table_name;
注释：只有 MS Access 支持 FIRST() 函数。
SELECT TOP 1 column_name FROM table_name ORDER BY column_name ASC;
SELECT TOP 1 name FROM Websites ORDER BY id ASC;
SELECT column_name FROM table_name ORDER BY column_name ASC LIMIT 1;
SELECT name FROM Websites ORDER BY id ASC LIMIT 1;
SELECT column_name FROM table_name ORDER BY column_name ASC WHERE ROWNUM <=1;
SELECT name FROM Websites ORDER BY id ASC WHERE ROWNUM <=1;
在本教程中，我们将使用 web3.xin样本数据库。
下面是选自 "Websites" 表的数据：
+----+--------------+---------------------------+-------+---------+ | id | name | url | alexa | country | +----+--------------+---------------------------+-------+---------+ | 1 | Google | https://www.google.cm/ | 1 | USA | | 2 | 淘宝 | https://www.taobao.com/ | 13 | CN | | 3 | 芝麻教程 | http://www.web3.xin/ | 4689 | CN | | 4 | 微博 | http://weibo.com/ | 20 | CN | | 5 | Facebook | https://www.facebook.com/ | 3 | USA | | 6 | 百度 | https://www.baidu.com/ | 4 | CN | | 7 | stackoverflow | http://stackoverflow.com/ | 0 | IND | +----+---------------+---------------------------+-------+---------+
下面的 SQL 语句选取 "Websites" 表的 "name" 列中第一个记录的值：
SELECT name AS FirstSite FROM Websites LIMIT 1;执行以上 SQL 结果如下所示：
mysql> select name as firstsite from websites limit 1; +-----------+ | firstsite | +-----------+ | Google | +-----------+ 1 row in set (0.07 sec)
