如何在MySQL varchar中设置带连字符和数字的字符串？

要设置带连字符和数字的字符串，需要使用单引号。例如，’Customer-1234-899’，’Customer-9383-901’等。

首先让我们创建一个表−

mysql> create table DemoTable
-> (
-> CustomerId varchar(100)
-> );
Query OK, 0 rows affected (0.70 sec)

使用插入命令在表中插入一些记录−

mysql> insert into DemoTable values('Customer-1234-899');
Query OK, 1 row affected (0.19 sec)

mysql> insert into DemoTable values('Customer-8373-900');
Query OK, 1 row affected (0.17 sec)

mysql> insert into DemoTable values('Customer-9383-901');
Query OK, 1 row affected (0.20 sec)

使用select语句从表中显示全部记录−

mysql> select *from DemoTable

阅读更多：MySQL 教程

输出

这将产生以下输出−

+-------------------+
| CustomerId        |
+-------------------+
| Customer-1234-899 |
| Customer-8373-900 |
| Customer-9383-901 |
+-------------------+
3 rows in set (0.00 sec)

以下是显示如何选择单个值的查询−

mysql> select *from DemoTable where (CustomerId='Customer-8373-900');

输出

这将产生以下输出−

+-------------------+
| CustomerId        |
+-------------------+
| Customer-8373-900 |
+-------------------+
1 row in set (0.00 sec)