我正在尝试实现一个“复杂”的 SQL 删除查询,但它不起作用。
这是我的查询:
DELETE
FROM Market_Commodity_Price_Series AS MC_PS
INNER JOIN MarketDetails_CommodityDetails AS MD_CD
ON MC_PS.market_commodity_details_id = MD_CD.id
INNER JOIN MarketDetails AS MD
ON MD_CD.market_details_id = MD.id
WHERE
MD.localization_id = 1
我只想删除 Market_Commodity_Price_Series 中的所有行,但具有此 WHERE 条件。正如您所看到的,where 条件使用一些 JOIN 操作。
问题是执行此查询时我收到此错误消息:
#42000You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS MC_PS INNER JOIN MarketDetails_CommodityDetails AS MD_CD ON MC_PS.mar' at line 2
我该如何解决这个问题?也许使用它作为子查询:
SELECT MC_PS.id
FROM Market_Commodity_Price_Series AS MC_PS
INNER JOIN MarketDetails_CommodityDetails AS MD_CD
ON MC_PS.market_commodity_details_id = MD_CD.id
INNER JOIN MarketDetails AS MD
ON MD_CD.market_details_id = MD.id
WHERE
MD.localization_id = 1
(使用 ID)
但如何呢?
最佳答案
您想删除MC_PS,因此请在删除丢失的“MC_PS”后写入
DELETE MC_PS
FROM Market_Commodity_Price_Series AS MC_PS
INNER JOIN MarketDetails_CommodityDetails AS MD_CD
ON MC_PS.market_commodity_details_id = MD_CD.id
INNER JOIN MarketDetails AS MD
ON MD_CD.market_details_id = MD.id
WHERE
MD.localization_id = 1
关于mysql - 为什么这个复杂的删除 SQL 查询不起作用?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50563414/