Question

我有一个关于从表中获取最新记录的经典问题。以下是声明：

SELECT t1.Item, t1.Price, t1.ODate
FROM Order AS t1
JOIN ( (SELECT Item, Price, Max(ODate) As MaxDate
        FROM Order
        GROUP BY Item ) As t2 )
ON t1.Item = t2.Item and t1.Odate = MaxDate
ORDER BY t1.Item ASC

此语句适用于phpMyAdmin和LibreOffice基础，但LibreOffice basic在SQL表达式中给出了一条消息：语法错误。

任何帮助？

Answer 1

也许你应该从t2的选择中删除“Price”。这在加入中似乎是无稽之谈，并且会在MSSMS 2008中导致下面的错误消息，这在我的情况下。

列'Order.Price'在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

尝试

SELECT t1.Item, t1.Price, t1.ODate
FROM Order AS t1
JOIN  (SELECT Item, Max(ODate) As MaxDate
        FROM Order
        GROUP BY Item ) As t2 
ON t1.Item = t2.Item and t1.Odate = MaxDate
ORDER BY t1.Item ASC

sql在libreoffice基础上工作，但不是基本的libre

1 个答案: