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MySQL查询以查找不以元音开头的城市名称列表？

2024-05-11 07:26:03 457

您可以将DISTINCT与RLIKE运算符配合使用，以查找不以元音开头的城市名称列表。

语法如下-

SELECT DISTINCT yourCityColumnName FROM yourTableName WHERE
yourCityColumnName NOT RLIKE ‘ ^[AEIOUaeiou].*$’;

为了理解上述语法，让我们创建一个表。在这里，我们有一列城市名称。

创建表的查询如下-

mysql> create table Employee_Information
   -> (
   -> Id int NOT NULL AUTO_INCREMENT,
   -> EmployeeName varchar(20),
   -> CityName varchar(20),
   -> PRIMARY KEY(Id)
   -> );

使用INSERT命令在表中插入一些记录。查询如下-

mysql> insert into Employee_Information(EmployeeName,CityName) values('Larry','New York');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Sam','Indianapolis');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Carol','El Paso');

mysql> insert into Employee_Information(EmployeeName,CityName) values('John','Austin');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Mike','Denver');

mysql> insert into Employee_Information(EmployeeName,CityName) values('David','Las Vegas');

mysql> insert into Employee_Information(EmployeeName,CityName) values('James','Albuquerque');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Robert','Portland');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Richard','Irvine');

mysql> insert into Employee_Information(EmployeeName,CityName) values('Michael',' Garland');

使用select语句显示表中的所有记录。查询如下-

mysql> select *from Employee_Information;

以下是输出-

+----+--------------+--------------+
| Id | EmployeeName | CityName     |
+----+--------------+--------------+
|  1 | Larry        | New York     |
|  2 | Sam          | Indianapolis |
|  3 | Carol        | El Paso      |
|  4 | John         | Austin       |
|  5 | Mike         | Denver       |
|  6 | David        | Las Vegas    |
|  7 | James        | Albuquerque  |
|  8 | Robert       | Portland     |
|  9 | Richard      | Irvine       |
| 10 | Michael      | Garland      |
+----+--------------+--------------+
10 rows in set (0.00 sec)

这是用于查找不以元音开头的城市名称列表的查询。这意味着城市名称的首字母不能以A，E，I，O，U或a，e，i，o，u开头-

mysql> SELECT DISTINCT CityName FROM Employee_Information
   -> WHERE CityName NOT RLIKE '^[AEIOUaeiou].*$';

以下是输出-

+-----------+
| CityName  |
+-----------+
| New York  |
| Denver    |
| Las Vegas |
| Portland  |
| Garland   |
+-----------+
5 rows in set (0.00 sec)

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MySQL查询以查找不以元音开头的城市名称列表？

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