Question

我收到错误“条件表达式中的数据类型不匹配”。在查询中。

像这样的查询工作完美

Human

当我尝试提出另一个条件时，它向我显示错误：

WorkingDays([ORDER_NOTIFICATION_DATE],[OP_DISTRIBUTION_DATE]) AS
BOOKING_DAYS, IIf([BOOKING_DAYS]>8,"IS LATE","ON TIME") AS BOOKING_DELAYED
FROM JOB INNER JOIN [ORDER] ON JOB.[JOB_ID] = ORDER.[JOB_ID]
WHERE (((ORDER.ORDER_NOTIFICATION_DATE) Is Not Null) AND
((ORDER.OP_DISTRIBUTION_DATE) Is Not Null));

WorkingDays返回一个整数，我尝试了其他帖子中提出的大多数解决方案。

这是工作日：

WorkingDays([ORDER.ORDER_NOTIFICATION_DATE],[ORDER.OP_DISTRIBUTION_DATE]) AS 
BOOKING_DAYS, IIf([BOOKING_DAYS]>8,"IS LATE","ON TIME") AS BOOKING_DELAYED
FROM JOB INNER JOIN [ORDER] ON JOB.[JOB_ID] = ORDER.[JOB_ID]
WHERE (((ORDER.ORDER_NOTIFICATION_DATE) Is Not Null) AND 
((ORDER.OP_DISTRIBUTION_DATE) Is Not Null) AND
((WorkingDays([ORDER.ORDER_NOTIFICATION_DATE],
[ORDER.OP_DISTRIBUTION_DATE]))>8));

Answer 1

我看到您正在使用Is Not Null和一个无法在同一查询中处理Null值的函数。

虽然您可能认为这可以很好地工作，但随着Null值被过滤掉，它们仍然会传递给此函数并产生错误。

使用Nz转义传递给函数的null：

WorkingDays(Nz([ORDER.ORDER_NOTIFICATION_DATE], 0),Nz([ORDER.OP_DISTRIBUTION_DATE], 0)) AS 
BOOKING_DAYS, IIf([BOOKING_DAYS]>8,"IS LATE","ON TIME") AS BOOKING_DELAYED
FROM JOB INNER JOIN [ORDER] ON JOB.[JOB_ID] = ORDER.[JOB_ID]
WHERE (((ORDER.ORDER_NOTIFICATION_DATE) Is Not Null) AND 
((ORDER.OP_DISTRIBUTION_DATE) Is Not Null) AND
((WorkingDays(Nz([ORDER.ORDER_NOTIFICATION_DATE], 0),
Nz([ORDER.OP_DISTRIBUTION_DATE], 0)))>8));

“条件表达式中的数据类型不匹配。” ms access中的错误，我做了建议的所有故障排除

1 个答案: