1.组合WHERE子句
select prod_name,vend_id,prod_price from products where vend_id=1003 and prod_price=2.5; // 使用and select prod_name,vend_id,prod_price from products where vend_id=1010 or prod_price>=10; // 使用or select prod_name,vend_id,prod_price from products where vend_id=1002 and vend_id=1003 or prod_price>=10; // 使用and和or
2.in操作符
select vend_name,vend_city from vendors where vend_city in ('New York','Lundon','paris'); // in 查询
3. NOT 操作符
select vend_name,vend_city from vendors where vend_city not in ('New York','Lundon','paris'); // not 查询
4.小结
感谢观看
