查询数据值满足字符串内某个条件的记录 [英] Query records where data values meet a certain criteria within string
问题描述
在field2的Access数据库中，数据值可能包含以下内容：
--- field1 ------------- field2- ------
小工具1 ----- 112398764567
小工具2 ----- 987611236789
小工具3-- --- 112345678901
小工具4 ----- 543287652345
我需要一个查询，检查字段2的字符串中的每4个字符并查看对于''1223''或'''9876''的所有实例都被找到。所以我的结果将是Widget 1，Widget 2和Widget 3记录。
通常，人们可以选择简单的搜索条件，例如：
where field2比如''* 1123 *''或''9876''。
但在我的情况下，我需要检查匹配的每4个字符，以防止拉入字符串的结果像这样： 05 11 23 87 4567
我希望这是有道理的。任何想法将不胜感激！ =）
In an Access Database for field2, the data values could consist of the following:
---field1-------------field2-------
Widget 1-----112398764567
Widget 2-----987611236789
Widget 3-----112345678901
Widget 4-----543287652345
I need a query that will check every 4 characters in the string of field 2 and look for all instances of ''1223'' OR ''9876'' are found. So my results would be Widget 1, Widget 2, and Widget 3 records.
Normally, one could right a simple search criteria such as:
where field2 like ''*1123*'' or ''9876''.
However in my case, I need it to check every 4 characters for a match to prevent results from pulling in strings like this: 051123874567
I hope this makes sense. Any ideas would be much appreciated! =)
推荐答案
SQL Gang可能会提出一个更好的答案，但现在可以使用：
The SQL Gang will probably come up with a better answer, but this will work for now:
您好ADezii，感谢您的快速回复。我想避免编写中间串函数的原因是因为我正在使用的字段长度超过1600个字符。也许有一个VBA功能可以实现这一点，但是我太过于将它拼凑在一起了。
Hi ADezii, thanks for the quick reply. The reason I''m wanting to avoid writing midstring functions is because the field I''m working with is over 1600 characters long. Maybe there is a VBA function that could accomplish this, but I''m too much of a novice to piece it together.
你是说Field2最多可以有1,600个字符，你希望测试每个4个字符，连续块（1 ... 4,5..8,1000 ... 1004等）对某些值？
Are you saying that Field2 can be up to 1,600 characters long and you wish to test each 4 character, consecutive block (1...4, 5..8, 1000...1004, etc.) against some value(s)?
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