SQL UCASE() 函数
SQL 教程
· 2019-03-04 09:43:47
UCASE() 函数
UCASE() 函数把字段的值转换为大写。
SQL UCASE() 语法
SELECT UCASE(column_name) FROM table_name;
用于 SQL Server 的语法
SELECT UPPER(column_name) FROM table_name;
演示数据库
在本教程中,我们将使用 CODERCTO 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 | 码农教程 | http://www.codercto.com/ | 4689 | CN | | 4 | 微博 | http://weibo.com/ | 20 | CN | | 5 | Facebook | https://www.facebook.com/ | 3 | USA | | 7 | stackoverflow | http://stackoverflow.com/ | 0 | IND | +----+---------------+---------------------------+-------+---------+
SQL UCASE() 实例
下面的 SQL 语句从 "Websites" 表中选取 "name" 和 "url" 列,并把 "name" 列的值转换为大写:
实例
SELECT UCASE(name) AS site_title, url
FROM Websites;
FROM Websites;
点击查看所有 SQL 教程 文章: https://www.codercto.com/courses/l/29.html
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