SQL LCASE() Function

該LCASE()函數

該LCASE()函數將現場為小寫的值。

SELECT LCASE(column_name) FROM table_name;

SELECT LOWER(column_name) FROM table_name;

在本教程中，我們將使用眾所周知的Northwind示例數據庫。

下面是從選擇"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語句選擇"CustomerName"和"City"從列"Customers"表，並轉換"CustomerName"欄為小寫：

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