mysql有条件的选择基于销售价格

Question

I have a database of products. One of the attributes is a normal price (price), a sale price (sale_price), a sale expiration date (sale_expires) and a sale price that never expires flag (sale_never_expires).

I can write a nice query that gets me the basic information on the product and the current price:

SELECT stock,name, (CASE WHEN (sale_never_expires='Y' AND sale_price > 0.0) OR (sale_expires >= REPLACE(CURDATE(),'-','') AND sale_price > 0.0) THEN sale_price ELSE price END) as current_price FROM inventory WHERE delete_flag=0;

But that's not what I need. What I need is to be able to write a query that returns all products in inventory with a current price less than a given amount, say $100 for the sake of example. I just need the matching records and will worry about formatting later.

I've tried and tried to find a way to write this but I'm stuck. What can I do??

Answer 1

Select * from tableName where current price <100

Should work fine unless I've misunderstood.

Answer 2

一个视图可能会有所帮助..它只会隐藏复杂性..

create view current_products as SELECT stock,name, (CASE ...