在 IIF 函數中使用 Select 語句

Question

如果列中沒有“位”，我想獲取最后 20 條記錄，如果有“位”，我想獲取記錄之后的記錄。 在我的示例中，注釋列中的“干船塢”字符串。 那是我的 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 運行時“-2147217900 (80040e14)”錯誤消息“[Microsoft][ODBC Excel 驅動程序] 查詢表達式中的語法錯誤...”

為什么我收到這個錯誤？

Answer 1

使您的嵌套查詢成為一個單獨的查詢LikeDryDock

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

然后在另一個內部調用該查詢

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