SQL LCASE() Function

该LCASE()函数

该LCASE()函数将现场为小写的值。

SELECT LCASE(column_name) FROM table_name;

SELECT LOWER(column_name) FROM table_name;

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

下面的SQL语句选择"CustomerName"和"City"从列"Customers"表，并转换"CustomerName"栏为小写：

SELECT LCASE(CustomerName) AS Customer, City
FROM Customers;