为此,请在MySQL中使用LEFT。让我们首先创建一个表-mysql> create table DemoTable
-> (
-> Title text
-> );
使用插入命令在表中插入一些记录-mysql> insert into DemoTable values('Java database connectivity to MySQL database');
mysql> insert into DemoTable values('Python with django framework');
mysql> insert into DemoTable values('C with data structure and algorithm');
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-+----------------------------------------------+
| Title |
+----------------------------------------------+
| Java database connectivity to MySQL database |
| Python with django framework |
| C with data structure and algorithm |
+----------------------------------------------+
3 rows in set (0.00 sec)
以下是从MySQL左侧获取一些单词的查询-mysql> select left(Title,10) as Title from DemoTable;
这将产生以下输出-+-----------------+
| Title |
+-----------------+
| Java datab |
| Python wit |
| C with dat |
+-----------------+
3 rows in set (0.00 sec)