问题描述
您好，
我正在努力寻找合适的代码来执行以下任务：
I am struggling to find the right code to perform the following task:
我有一个字段" ProductNumber"在访问表（这是一个基于时间戳的记录表）中。我从数百个文本文件中获取此表的数据。因此，Access表格中的数据是动态的。
I have a field "ProductNumber" in an Access Table (which is a timestamp based record table). I get data to this table from hundreds of text files. So data in Access table is dynamic.
" ProductNumber"字段包含整数产品数字（最少有10000条记录）。
"ProductNumber" field contains Integer product numbers (there are 10000 records as a minimum).
但是，它可能只是整个表中的一个或几个独特的产品（这意味着可以说2000产品＃2的记录，6000个产品记录＃8和产品＃1的其余2000条记录。
However, it might be only one or few unique products in the whole table (it means that there are lets say 2000 records of product #2, 6000 records of product #8 and the rest 2000 records of product #1).
我想快速制作一个VBA函数，在没有循环遍历整个字段的情况下输出带有3个数字的数组：2,8,1。
I would like to make a VBA function that quickly and without looping through the entire field would output array with 3 numbers in this case: 2, 8, 1.
拥有一个具有唯一数字的数组我可以使用SQL构建一个查询，该查询将该特定数组作为数据过滤的标准。
Having an array with unique numbers I could then use SQL to built a query that would have that particular array as s criteria for data filtering.
有什么建议吗？
推荐答案
SELECT DISTINCT ProductNumber FROM NameOfTheTable
SELECT DISTINCT ProductNumber FROM NameOfTheTable
将返回唯一的产品编号。您可以在其他查询中将其用作子查询，或者可以在此SQL上打开记录集（DAO或ADODB）并以任何方式使用它。
will return the unique product numbers. You can use this as a subquery in other queries, or you can open a recordset (DAO or ADODB) on this SQL and use it any way you want.
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