SQL LEN() 语法
SELECT LEN(column_name) FROM table_name
Id | LastName | FirstName | Address | City |
---|---|---|---|---|
1 | Adams | John | Oxford Street | London |
2 | Bush | George | Fifth Avenue | New York |
3 | Carter | Thomas | Changan Street | Beijing |
现在,我们希望取得 "City" 列中值的长度。
我们使用如下 SQL 语句:
SELECT LEN(City) as LengthOfCity FROM Persons
结果集类似这样:
LengthOfCity |
---|
6 |
8 |
7 |
原文地址:https://www.cnblogs.com/since-1995/p/11479288.html
时间: 2024-10-12 00:35:50