[英]SQL NOT IN Query
Can anyone help me with this MySQL query? 谁能帮我这个MySQL查询吗?
SELECT p.ProductID,
p.StoreID,
p.DiscountPercentage
FROM Products p
WHERE p.IsSpecial = 1
AND p.SpecialDate >= date_sub(now(),interval 15 minute)
AND p.DiscountPercentage >= ?DiscountPercentage
AND p.ProductID NOT IN (SELECT lf.LiveFeedID
From LiveFeed lf
WHERE p.ProductID = lf.ProductID
AND lf.DateAdded >= date_sub(now(),interval 30 day))
AND p.StoreID NOT IN (SELECT lf.LiveFeedID
From LiveFeed lf
WHERE p.StoreID = lf.StoreID
AND lf.DateAdded >= date_sub(now(),interval 6 hour))
ORDER BY p.StoreID, p.DiscountPercentage DESC
I'm trying join where the ProductID is not in the livefeed table in the last 30 days and where the storeid is not in the livefeed table in the last 6 hours, but it does not seem to be working. 我正在尝试加入,过去30天内ProductID不在livefeed表中,而storeid过去6小时不在livefeed表中,但似乎不起作用。 Any idea what I'm doing wrong?
知道我在做什么错吗?
乍一看,您的第一LiveFeedID
查询应该选择ProductID
而不是LiveFeedID
而第二LiveFeedID
查询应该选择StoreID
而不是LiveFeedID
I'm too late: 我为时已晚:
SELECT p.ProductID,
p.StoreID,
p.DiscountPercentage
FROM Products p
WHERE p.IsSpecial = 1
AND p.SpecialDate >= date_sub(now(),interval 15 minute)
AND p.DiscountPercentage >= ?DiscountPercentage
AND p.ProductID NOT IN (SELECT lf.productid
FROM LIVEFEED lf
WHERE lf.DateAdded >= DATE_SUB(NOW(), INTERVAL 30 DAY))
AND p.storeid NOT IN (SELECT lf.storeid
FROM LIVEFEED lf
WHERE lf.DateAdded >= DATE_SUB(NOW(), INTERVAL 6 HOUR))
ORDER BY p.StoreID, p.DiscountPercentage DESC
You were using EXISTS syntax with a correllated subquery... 您正在使用EXISTS语法和相关的子查询...
I'm trying to get the top discount for each store.
我正在尝试为每家商店获得最高折扣。
In that case, use: 在这种情况下,请使用:
SELECT p.StoreID,
MAX(p.DiscountPercentage)
FROM Products p
WHERE p.IsSpecial = 1
AND p.SpecialDate >= date_sub(now(),interval 15 minute)
AND p.DiscountPercentage >= ?DiscountPercentage
AND p.ProductID NOT IN (SELECT lf.productid
FROM LIVEFEED lf
WHERE lf.DateAdded >= DATE_SUB(NOW(), INTERVAL 30 DAY))
AND p.storeid NOT IN (SELECT lf.storeid
FROM LIVEFEED lf
WHERE lf.DateAdded >= DATE_SUB(NOW(), INTERVAL 6 HOUR))
GROUP BY p.storeid
ORDER BY p.StoreID, p.DiscountPercentage DESC
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