SQL LAST() 函数
SQL LAST() 函数
LAST() 函数
ORDER BY column_name DESC; 实例 SELECT TOP 1 name FROM Websites
ORDER BY id DESC; MySQL 语法 SELECT column_name FROM table_name
ORDER BY column_name DESC
LIMIT 1; 实例 SELECT name FROM Websites
ORDER BY id DESC
LIMIT 1; Oracle 语法 SELECT column_name FROM table_name
ORDER BY column_name DESC
WHERE ROWNUM <=1; 实例 SELECT name FROM Websites
ORDER BY id DESC
WHERE ROWNUM <=1;
演示数据库
ORDER BY id DESC
LIMIT 1;
LAST() 函数返回指定的列中最后一个记录的值。
SQL LAST() 语法 SELECT LAST(column_name) FROM table_name;注释：只有 MS Access 支持 LAST() 函数。
SQL Server、MySQL 和 Oracle 中的 SQL LAST() 工作区 SQL Server 语法 SELECT TOP 1 column_name FROM table_nameORDER BY column_name DESC; 实例 SELECT TOP 1 name FROM Websites
ORDER BY id DESC; MySQL 语法 SELECT column_name FROM table_name
ORDER BY column_name DESC
LIMIT 1; 实例 SELECT name FROM Websites
ORDER BY id DESC
LIMIT 1; Oracle 语法 SELECT column_name FROM table_name
ORDER BY column_name DESC
WHERE ROWNUM <=1; 实例 SELECT name FROM Websites
ORDER BY id DESC
WHERE ROWNUM <=1;
演示数据库
在本教程中，我们将使用 RUNOOB 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 | 软件开发网 | http://www.mscto.com/ | 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 |
+----+---------------+---------------------------+-------+---------+
SQL LAST() 实例
下面的 SQL 语句选取 "Websites" 表的 "name" 列中最后一个记录的值：
实例 SELECT name FROM WebsitesORDER BY id DESC
LIMIT 1;
执行以上 SQL 结果如下所示：
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