查询结果在MySQL中少于X个字符？
您可以将CHAR_LENGTH()与WHERE子句一起使用。让我们首先创建一个表-
mysql> create table DemoTable -> ( -> FullName varchar(50) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('Chris Brown');
mysql> insert into DemoTable values('David Miller');
mysql> insert into DemoTable values('Robert Miller');
mysql> insert into DemoTable values('John Smith');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
这将产生以下输出-
+---------------+ | FullName | +---------------+ | Chris Brown | | David Miller | | Robert Miller | | John Smith | +---------------+ 4 rows in set (0.00 sec)
这是查询以获取MySQL中少于X个字符的记录-
mysql> select *from DemoTable where char_length(FullName) < 12;
这将产生以下输出-
+-------------+ | FullName | +-------------+ | Chris Brown | | John Smith | +-------------+ 2 rows in set (0.00 sec)