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我们可以使用MySQL WHERE子句获取多个值吗？

2024-04-30 23:33:05 416

是的，我们可以获取，但是将MySQLOR用于条件。让我们首先创建一个-

mysql> create table DemoTable1421
   -> (
   -> EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> EmployeeName varchar(20),
   -> EmployeeSalary int
   -> );

使用insert在表中插入一些记录-

mysql> insert into DemoTable1421(EmployeeName,EmployeeSalary) values('Chris',10000);
mysql> insert into DemoTable1421(EmployeeName,EmployeeSalary) values('Bob',15000);
mysql> insert into DemoTable1421(EmployeeName,EmployeeSalary) values('David',8000);
mysql> insert into DemoTable1421(EmployeeName,EmployeeSalary) values('Carol',8500);
mysql> insert into DemoTable1421(EmployeeName,EmployeeSalary) values('Mike',14500);

使用选择显示表中的所有记录-

mysql> select * from DemoTable1421;

这将产生以下输出-

+------------+--------------+----------------+
| EmployeeId | EmployeeName | EmployeeSalary |
+------------+--------------+----------------+
|          1 | Chris       |           10000 |
|          2 | Bob         |           15000 |
|          3 | David       |            8000 |
|          4 | Carol       |            8500 |
|          5 | Mike        |           14500 |
+------------+--------------+----------------+
5 rows in set (0.00 sec)

这是使用OR获取多个值的查询-

mysql> select * from DemoTable1421 where EmployeeId=1 OR EmployeeName='David' OR EmployeeSalary=14500;

这将产生以下输出-

+------------+--------------+----------------+
| EmployeeId | EmployeeName | EmployeeSalary |
+------------+--------------+----------------+
|          1 | Chris        |          10000 |
|          3 | David        |           8000 |
|          5 | Mike         |          14500 |
+------------+--------------+----------------+
3 rows in set (0.00 sec)

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我们可以使用MySQL WHERE子句获取多个值吗？

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