SQL 与和
示例
您也可以将多个运算符组合在一起以创建更复杂的WHERE条件。以下示例使用该Employees表：
Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date CreatedDate ModifiedDate 1 James Smith 1234567890 NULL 1 1000 01-01-2002 01-01-2002 01-01-2002 2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-2005 01-01-2002 3 Michael Williams 1357911131 1 2 600 12-05-2009 12-05-2009 NULL 4 Johnathon Smith 1212121212 2 1 500 24-07-2016 24-07-2016 01-01-2002
和
SELECT * FROM Employees WHERE DepartmentId = 1 AND ManagerId = 1
将返回：
Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date CreatedDate ModifiedDate 2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-2005 01-01-2002
要么
SELECT * FROM Employees WHERE DepartmentId = 2 OR ManagerId = 2
将返回：
Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date CreatedDate ModifiedDate 3 Michael Williams 1357911131 1 2 600 12-05-2009 12-05-2009 NULL 4 Johnathon Smith 1212121212 2 1 500 24-07-2016 24-07-2016 01-01-2002