该LAST()函数
该LAST()函数返回所选列的最后一个值。
SQL LAST()语法
SELECT LAST(column_name) FROM table_name;Note:该LAST()函数仅在支持Access。
SQL LAST()解决方法在SQL Server，MySQL和Oracle
SQL Server的语法
SELECT TOP 1 column_name
FROM table_name
ORDER BY column_name DESC;例
SELECT TOP 1 CustomerName FROM Customers
ORDER BY CustomerID DESC;MySQL的语法
SELECT column_name FROM table_name
ORDER BY column_name DESC
LIMIT 1;例
SELECT CustomerName FROM Customers
ORDER BY CustomerID DESC
LIMIT 1;Oracle语法
SELECT column_name FROM table_name
ORDER BY
column_name DESC
WHERE ROWNUM <=1;例
SELECT CustomerName FROM Customers
ORDER BY CustomerID DESC
WHERE
ROWNUM <=1;演示数据库
在本教程中，我们将使用众所周知的Northwind示例数据库。
下面是从选择"Customers"表：
| CustomerID | CustomerName | ContactName | Address | City | PostalCode | Country |
|---|---|---|---|---|---|---|
| 1 |
Alfreds Futterkiste | Maria Anders | Obere Str. 57 | Berlin | 12209 | Germany |
| 2 | Ana Trujillo Emparedados y helados | Ana Trujillo | Avda. de la Constitucion 2222 | Mexico D.F. | 05021 | Mexico |
| 3 | Antonio Moreno Taqueria | Antonio Moreno | Mataderos 2312 | Mexico D.F. | 05023 | Mexico |
| 4 |
Around the Horn | Thomas Hardy | 120 Hanover Sq. | London | WA1 1DP | UK |
| 5 | Berglunds snabbkop | Christina Berglund | Berguvsvagen 8 | Lulea | S-958 22 | Sweden |
SQL LAST()实例
下面的SQL语句选择的最后一个值"CustomerName"从列"Customers"表：