mysql学习打卡day4

今日成果：

select * from products where quantity_in_stock in (49,38,72);
-- in 表示多个符合条件的结果集?

select * from customers where birth_date ?between '1990-01-01' and '2000-01-01';
-- betwee - and 表示在两者之间?

感觉各位读者，欢迎 各位👍点赞?评论?收藏