I found another use for mapped tables yesterday that I figure a few people over time will find of use.
Customer has TableA and TableB. They can be related through a common key, which, of course, is important for the map.
My customer needed a tablecount() of TableA. But the "desired" filter for TableA also included criteria from TableB. For instance:
query.filter = "Cond1 = 'x" .and. Cond2 = 'y' .and. TableB->Cond3 = 'z'"
Now, you can't run Tablecount() with such a query, or across tables, or against a set. It occurred to me a mapped table might be the way to go. I set up the map, included just the fields we needed for the query.filter, and it worked as I had hoped. I just stripped the TableB reference from the original query.filter, e.g.:
query.filter = "Cond1 = 'x" .and. Cond2 = 'y' .and. Cond3 = 'z'"
result = tablecount("MapTableName", query.filter)
Sure, this can be done in other ways but I think this provides one of the simplest approaches I've used yet, and is easiest for most to implement.
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Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.
When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.
The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.
When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.
A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.
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When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.
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Mapped Tables - Another Use
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