ms访问查询中表达式中的未定义函数'Dcount' [英] undefined function 'Dcount' in expression- in ms access query

问题描述

嗨先生..



i我试图在查询中使用Dcount插入序列号

语法如 -

序列号：DCount（*，tablename，ID< =&[ID]）

但是当我打开查询得到按摩时（未定义函数'Dcount'在表达式中）



是在查询中插入序列号的正确方法

如果不是pls。告诉我是什么方式

hi sir..

i am trying to insert serial numbers using with Dcount in query
the syntax like -
Serial Number: DCount("*","tablename","ID <=" & [ID])
but when i open query get massage like (undefined function 'Dcount' in expression)

is it right way to insert serial numbers in query
if not pls. tell me what's the way

推荐答案

你的问题的答案是不，这不是正确的方式。

实际上，只要在编译时处理表达式中的错误消息未定义函数'Dcount'，就没有正确的方法。你问的是错误的问题，因此无法得到正确的答案。



你的问题必须是为什么我会收到此错误消息？和赔率是编译器是对的，你错了。

这个问题的答案是：

- 查看文档。

- 谷歌的例子

- 谷歌的tuto

- 进一步学习语言。

The answer to your question is No, it is not the right way.
In fact, there is no right way for anything as long as you deal with an error message undefined function 'Dcount' in expression at compile time. You are asking the wrong question and thus can't get the right answer.

Your question have to be Why do I get this error message ? and odds are that to compiler is right and you are wrong.
The answer to this question is:
- check the documentation.
- Google for an example
- Google for a tuto
- learn further the language.

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