我们可以使用MySQL WHERE子句获取多个值吗？
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)