使用 MySQL 查询查找所有以字母"a"或"b"或"c"开头的名称?
mysqlmysqli database
您需要使用 LIKE 和 OR 运算符来查找所有以 a、b 或 c 开头的名称。语法如下:
SELECT *FROM yourTableName WHERE yourColumnName like 'A%' or yourColumnName like 'B%' or yourColumnName like 'C%';
以上查询查找仅以字母 ‘a’、‘b’、‘c’ 开头的所有名称。为了理解上述语法，让我们创建一个表。创建表的查询如下:
mysql> create table AllNamesStartWithAorBorC -> ( -> Id int NOT NULL AUTO_INCREMENT, -> EmployeeName varchar(20), -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (0.70 sec)
使用 insert 命令在表中插入一些记录。 查询语句如下:
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Adam');
Query OK, 1 row affected (0.19 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Bob');
Query OK, 1 row affected (0.16 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('baden');
Query OK, 1 row affected (0.48 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Carol');
Query OK, 1 row affected (0.41 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Mike');
Query OK, 1 row affected (0.13 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Larry');
Query OK, 1 row affected (0.16 sec)
mysql> insert into AllNamesStartWithAorBorC(EmployeeName) values('Chris');
Query OK, 1 row affected (0.18 sec)
使用 select 语句显示表中的所有记录。查询如下:
mysql> select *from AllNamesStartWithAorBorC;
输出结果如下:
+----+--------------+ | Id | EmployeeName | +----+--------------+ | 1 | Adam | | 2 | Bob | | 3 | baden | | 4 | Carol | | 5 | Mike | | 6 | Larry | | 7 | Chris | +----+--------------+ 7 rows in set (0.00 sec)
下面是查找以 a、b 或 c 开头的名称的查询。查询如下:
mysql> select *from AllNamesStartWithAorBorC where EmployeeName like 'A%' or EmployeeName like 'B%' or -> EmployeeName like 'C%';
输出结果如下:
+----+--------------+ | Id | EmployeeName | +----+--------------+ | 1 | Adam | | 2 | Bob | | 3 | baden | | 4 | Carol | | 7 | Chris | +----+--------------+ 5 rows in set (0.00 sec)
