如何在MySQL中搜索确切的字符串?
您可以使用二进制在MySQL中搜索确切的字符串。语法如下:
SELECT * FROM yourTableName WHERE BINARY yourColumnName = yourStringValue;
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 ExactSearch-> (
-> Id int NOT NULL AUTO_INCREMENT,
-> UserId varchar(10),
-> UserName 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 ExactSearch(UserId,UserName) values('USER12','John');mysql> insert into ExactSearch(UserId,UserName) values('12USER','Carol');
mysql> insert into ExactSearch(UserId,UserName) values('USER123','Bob');
mysql> insert into ExactSearch(UserId,UserName) values('USER231','Sam');
使用select语句显示表中的所有记录:
mysql> select *from ExactSearch;
以下是输出:
+----+---------+----------+| Id | UserId | UserName |
+----+---------+----------+
| 1 | USER12 | John |
| 2 | 12USER | Carol |
| 3 | USER123 | Bob |
| 4 | USER231 | Sam |
+----+---------+----------+
4 rows in set (0.00 sec)
这是在MySQL中搜索确切字符串的查询。我们正在搜索字符串“ USER123”:
mysql> select *from ExactSearch where binary UserId = 'USER123';
以下是输出:
+----+---------+----------+| Id | UserId | UserName |
+----+---------+----------+
| 3 | USER123 | Bob |
+----+---------+----------+
1 row in set (0.00 sec)
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