访问 SQL 如何在 SELECT 查询中进行增量 [英] Access SQL how to make an increment in SELECT query

问题描述

我有一个 SQL 查询给我 X 个结果，我希望查询输出有一个名为计数使查询像这样:

I Have an SQL query giving me X results, I want the query output to have a coulmn called count making the query somthing like this:

count id section
1     15    7
2     3     2
3     54    1
4     7     4

我怎样才能做到这一点?

How can I make this happen?

推荐答案

好吧，我想这已经足够接近，足以构成一个答案:以下链接指定了两种方法:http://www.techrepublic.com/blog/microsoft-office/an-access-query-that-returns-every-nth-record/

Alright, I guess this comes close enough to constitute an answer: the following link specifies two approaches: http://www.techrepublic.com/blog/microsoft-office/an-access-query-that-returns-every-nth-record/

第一种方法假设您有一个 ID 值并使用 DCount(类似于@mikeY 的解决方案).

The first approach assumes that you have an ID value and uses DCount (similar to @mikeY's solution).

第二种方法假设您可以创建一个 VBA 函数，该函数将为记录集中的每个记录运行一次，并且每次要运行计数时都需要手动重置(使用某些 VBA) - 因为它使用一个静态"值来运行它的计数器.

The second approach assumes you're OK creating a VBA function that will run once for EACH record in the recordset, and will need to be manually reset (with some VBA) every time you want to run the count - because it uses a "static" value to run its counter.

只要您有合理的数字(数百，而不是数千)或记录，第二种方法对我来说看起来是最简单/最强大的.

As long as you have reasonable numbers (hundreds, not thousands) or records, the second approach looks like the easiest/most powerful to me.

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