MySQL 如何选择最后一个值的字符串等于x的记录

您可以使用带有通配符的LIKE运算符选择其中最后一个值的字符串等于x的记录，例如’10’、’15’等。

让我们首先创建一个表―

mysql> create table DemoTable
(
    ClientId varchar(20)
);
Query OK, 0 rows affected (0.68 sec)

使用插入命令将记录插入表中―

mysql> insert into DemoTable values('CLI-101');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('CLI-110');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('CLI-201');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('CLI-210');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values('CLI-502');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('CLI-1010');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values('CLI-1012');
Query OK, 1 row affected (0.15 sec)

以下是使用SELECT语句从表中显示所有记录的查询―

mysql> select *from DemoTable;

这将产生以下输出―

+----------+
| ClientId |
+----------+
| CLI-101  |
| CLI-110  |
| CLI-201  |
| CLI-210  |
| CLI-502  |
| CLI-1010 |
| CLI-1012 |
+----------+
7 rows in set (0.00 sec)

以下是在MySQL中选择最后一个值为10或12的字符串的查询。

mysql> select *from DemoTable where ClientId like '%10' or ClientId like '%12';

这将产生以下输出―

+----------+
| ClientId |
+----------+
| CLI-110  |
| CLI-210  |
| CLI-1010 |
| CLI-1012 |
+----------+
4 rows in set (0.00 sec)

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