在IIF函数中使用Select语句

问题描述

如果列中没有“位”，并且如果有“位”，我想获取最后20条记录，我想获取记录后的记录。在我的示例中，“评论”列中为“干船坞”字符串。 那就是我的sql：

SELECT TOP 20 
    [Date],[Lift ID]
FROM [Input Data$]
WHERE [Vessel name]='" + shipName + "' 
    AND [Lift ID] >= Iif(
                            (
                                SELECT max([Lift ID]) 
                                FROM [Input Data$] 
                                WHERE [Vessel name]='" + shipName + "' 
                                    AND [Comments] LIKE '%dry dock%'
                            ) >=1;
                            (
                                SELECT max([Lift ID]) 
                                FROM [Input Data$] 
                                WHERE [Vessel name]='" + shipName + "' 
                                    AND [Comments] LIKE '%dry dock%'
                            );
                            1
                        )
ORDER BY [Date] DESC

我收到VBA运行时'-2147217900（80040e14）'错误消息“查询表达式中出现[[Microsoft] [ODBC Excel驱动程序]语法错误...”

为什么会出现此错误？

解决方法

使嵌套查询成为单独的查询LikeDryDock

    SELECT max([Lift ID]) 
    FROM [Input Data$] 
    WHERE [Vessel name]='" + shipName + "' 
        AND [Comments] LIKE '%dry dock%'

然后在另一个内部调用该查询

SELECT TOP 20 
    [Date],[Lift ID]
FROM [Input Data$]
WHERE [Vessel name]='" + shipName + "' 
    AND [Lift ID] >= Iif(
        LikeDryDock >= 1,LikeDryDock,1
    )
ORDER BY [Date] DESC