Question

我的SQL查询中显示此错误：

“ SELECT列表的表达式＃19不在GROUP BY子句中，并且包含非汇总列'auctionsystems.auction_watches.watchId' 在功能上不依赖于GROUP BY子句中的列；这是与sql_mode = only_full_group_byDatabase select查询不兼容失败。”

我试图从拍卖列表中获取用户正在观看的拍卖次数，但是当用户选择多个拍卖来观看错误显示时。有人可以告诉我查询出了什么问题吗？

SELECT auctions.auctionId, quantity, startPrice, reservePrice, startTime,
        endTime, itemName, itemBrand, itemDescription, items.image, auctions.views,
        item_categories.categoryName as subCategoryName, superCategoryName,
        item_categories.superCategoryId, item_categories.categoryId, users.username as sellerUsername,
        conditionName, countryName, auction_watches.watchId, COUNT(DISTINCT (bids.bidId)) AS numBids,
        MAX(bids.bidPrice) AS highestBid,
        case
            when MAX(bids.bidPrice)is not null THEN MAX(bids.bidPrice)
            else startPrice
        end as currentPrice,
        case
            when MAX(bids.bidPrice) > auctions.reservePrice AND auctions.endTime < now() then 1
            else 0
        end as sold


        FROM auctions
            LEFT OUTER JOIN bids ON bids.auctionId = auctions.auctionId
            JOIN auction_watches ON auction_watches.auctionId = auctions.auctionId
            JOIN items ON items.itemId = auctions.itemId
            JOIN users ON items.userId = users.userId
            JOIN item_categories ON items.categoryId = item_categories.categoryId
            JOIN super_item_categories ON  item_categories.superCategoryId = super_item_categories.superCategoryId
            JOIN item_conditions ON items.conditionId = item_conditions.conditionId
            JOIN countries ON users.countryId = countries.countryId

        WHERE auction_watches.watchId IN( 19706, 19707 )

        GROUP BY auctions.auctionId

        ORDER BY CASE WHEN auctions.endTime > now() THEN 0 ELSE 1 END ASC, auctions.endTime ASC

Answer 1

您需要在group by子句中添加除聚合列以外的所有其他列

SELECT auctions.auctionId, quantity, startPrice, reservePrice, startTime,
        endTime, itemName, itemBrand, itemDescription, items.image, auctions.views,
        item_categories.categoryName as subCategoryName, superCategoryName,
        item_categories.superCategoryId, item_categories.categoryId, users.username as sellerUsername,
        conditionName, countryName, auction_watches.watchId, COUNT(DISTINCT (bids.bidId)) AS numBids,
        MAX(bids.bidPrice) AS highestBid,
        case
            when MAX(bids.bidPrice)is not null THEN MAX(bids.bidPrice)
            else startPrice
        end as currentPrice,
        case
            when MAX(bids.bidPrice) > auctions.reservePrice AND auctions.endTime < now() then 1
            else 0
        end as sold


        FROM auctions
            LEFT OUTER JOIN bids ON bids.auctionId = auctions.auctionId
            JOIN auction_watches ON auction_watches.auctionId = auctions.auctionId
            JOIN items ON items.itemId = auctions.itemId
            JOIN users ON items.userId = users.userId
            JOIN item_categories ON items.categoryId = item_categories.categoryId
            JOIN super_item_categories ON  item_categories.superCategoryId = super_item_categories.superCategoryId
            JOIN item_conditions ON items.conditionId = item_conditions.conditionId
            JOIN countries ON users.countryId = countries.countryId

        WHERE auction_watches.watchId IN( 19706, 19707 )

        GROUP BY auctions.auctionId, quantity, startPrice, reservePrice, startTime,
        endTime, itemName, itemBrand, itemDescription, items.image, auctions.views,
        item_categories.categoryName as subCategoryName, superCategoryName,
        item_categories.superCategoryId, item_categories.categoryId, users.username as sellerUsername,
        conditionName, countryName, auction_watches.watchId

        ORDER BY CASE WHEN auctions.endTime > now() THEN 0 ELSE 1 END ASC, auctions.endTime ASC

＃1055-SELECT列表的表达式＃19不在GROUP BY子句中，并且包含未聚合的列

1 个答案: