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在MySQL中搜索多列以进行行匹配

2024-05-14 02:46:05 355

为此，请使用UNION。让我们首先创建一个表-

mysql> create table DemoTable645 (Id int,FirstName varchar(100));

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable645 values(100,'Chris');
mysql> insert into DemoTable645 values(101,'Robert');
mysql> insert into DemoTable645 values(101,'Bob');
mysql> insert into DemoTable645 values(102,'Carol');
mysql> insert into DemoTable645 values(100,'John');
mysql> insert into DemoTable645 values(100,'Robert');
mysql> insert into DemoTable645 values(101,'Mike');
mysql> insert into DemoTable645 values(101,'John');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable645;

这将产生以下输出-

+------+-----------+
| Id   | FirstName |
+------+-----------+
|  100 | Chris     |
|  101 | Robert    |
|  101 | Bob       |
|  102 | Carol     |
|  100 | John      |
|  100 | Robert    |
|  101 | Mike      |
|  101 | John      |
+------+-----------+
8 rows in set (0.00 sec)

以下是搜索多列的查询-

mysql> select Id AS Records from DemoTable645 where Id LIKE '%100%'
   union
   select FirstName from DemoTable645 where FirstName LIKE '%John%'
   order by 1 LIMIT 3;

这将产生以下输出-

+---------+
| Records |
+---------+
| 100     |
| John    |
+---------+
2 rows in set (0.00 sec)

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在MySQL中搜索多列以进行行匹配

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