SQL LAST() 函數
SQL LAST() 函數
LAST() 函數
LAST() 函數返回指定的列中最後一個記錄的值。
SQL LAST() 語法
SELECT LAST(column_name) FROM table_name;
注釋：只有 MS Access 支持 LAST() 函數。
SQL Server、MySQL 和 Oracle 中的 SQL LAST() 工作區
SQL Server 語法
SELECT TOP 1 column_name
FROM table_name
ORDER BY column_name DESC;
ORDER BY column_name DESC;
實例
SELECT TOP 1 name FROM Websites
ORDER BY id DESC;
ORDER BY id DESC;
MySQL 語法
SELECT column_name FROM table_name
ORDER BY column_name DESC
LIMIT 1;
ORDER BY column_name DESC
LIMIT 1;
實例
SELECT name FROM Websites
ORDER BY id DESC
LIMIT 1;
ORDER BY id DESC
LIMIT 1;
Oracle 語法
SELECT column_name FROM table_name
ORDER BY column_name DESC
WHERE ROWNUM <=1;
ORDER BY column_name DESC
WHERE ROWNUM <=1;
實例
SELECT name FROM Websites
ORDER BY id DESC
WHERE ROWNUM <=1;
ORDER BY id DESC
WHERE ROWNUM <=1;
演示數據庫
在本教程中，我們將使用 RUNOOB 樣本數據庫。
下面是選自 "Websites" 表的數據：
+----+--------------+---------------------------+-------+---------+ | id | name | url | alexa | country | +----+--------------+---------------------------+-------+---------+ | 1 | Google | https://www.google.cm/ | 1 | USA | | 2 | 淘寶 | https://www.taobao.com/ | 13 | CN | | 3 | 教程 | http://www.sharebody.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() 實例
下面的 SQL 語句選取 "Websites" 表的 "name" 列中最後一個記錄的值：
實例
SELECT name FROM Websites
ORDER BY id DESC
LIMIT 1;
ORDER BY id DESC
LIMIT 1;