Question

我有以下结构的表格，

name (type: TEXT)
price (type: INT)
color (type: TEXT)
vehicletype (type: TEXT) eg. SEDAN/SUV

现在我要检索（名称，价格，颜色，车型）如果它是黑色轿车，我准备支付10,000，但如果它是红色或白色，那么不超过8,000。对于任何其他颜色，我不会超过7,000，除非它是SUV，在这种情况下，我的预算是黑色的15,000或任何其他颜色的14,000。我有这个查询，但它没有用，

SELECT name, price, color, vehicletype FROM carrecords WHERE
(vehicletype = 'SEDAN' AND color  = 'black' AND price <= 10000) OR
(vehicletype = 'SEDAN' AND color IN('red','white') AND price <= 8000 ) OR
(vehicletype  = 'SEDAN' /* here I tried != "SUV" as well - no luck*/  AND color NOT IN('red','white','black') AND price <= 7000) OR
(vehicletype = 'SUV' AND color  = 'black' AND price <= 15000) OR
(vehicletype = 'SUV' AND color  != 'black' AND price <= 14000)
ORDER BY price ASC

所以，有什么解决方案吗？

Answer 1

SELECT name, price, color, vehicletype FROM carrecords WHERE
-- black sedans up to 10k
(vehicletype = 'SEDAN' AND color  = 'black' AND price <= 10000)
-- red or white sedans up to 8k
OR (vehicletype = 'SEDAN' AND color IN('red','white') AND price <= 8000 )
-- black SUV up to 15k
OR (vehicletype = 'SUV' AND color  = 'black' AND price <= 15000)
-- non-black SUV up to 14k
OR (vehicletype = 'SUV' AND color  != 'black' AND price <= 14000)
-- any other vehicle up to 7k
OR (price <= 7000)
ORDER BY price ASC

除了mysql查询中的条件..

1 个答案: