如何选择MySQL中以特定值开头的记录？

要选择以特定值开头的记录，需要使用 LIKE 操作符。让我们首先创建一个表 –

mysql> create table DemoTable690(
   UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   UserValue varchar(100)
);
Query OK, 0 rows affected (0.56 sec)

使用插入命令在表中插入一些记录 –

mysql> insert into DemoTable690(UserValue) values('567890');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable690(UserValue) values('789032');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable690(UserValue) values('567342');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable690(UserValue) values('890678');
Query OK, 1 row affected (0.16 sec)

使用选择语句显示表中的所有记录 –

mysql> select *from DemoTable690;

将显示以下输出 –

+--------+-----------+
| UserId | UserValue |
+--------+-----------+
|      1 | 567890    |
|      2 | 789032    |
|      3 | 567342    |
|      4 | 890678    |
+--------+-----------+
4 rows in set (0.00 sec)

以下是选择以特定值开头的记录的查询语句 –

mysql> select *from DemoTable690 where UserValue LIKE '567%';

将会产生以下输出 –

+--------+-----------+
| UserId | UserValue |
+--------+-----------+
|      1 | 567890    |
|      3 | 567342    |
+--------+-----------+
2 rows in set (0.00 sec)

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