问题
I have multiple flatfiles (CSV) (with multiple records) where files will be received randomly. I have to combine them (records) with unique ID fields.
How can I combine them, if there is no common unique field for all files, and I don't know which one will be received first?
Here are some files examples:
In real there are 16 files. Fields and records are much more then in this example.
回答1:
I would avoid trying to do this purely in XSLT/BizTalk orchestrations/C# code. These are fairly simple flat files. Load them into SQL, and create a view to join your data up.
You can still use BizTalk to pickup/load the files. You can also still use BizTalk to execute the view or procedure that joins the data up and sends your final message.
There are a few questions that might help guide how this would work here:
- When do you want to join the data together? What triggers that (a time of day, a certain number of messages received, a certain type of message, a particular record, etc)? How will BizTalk know when it's received enough/the right data to join?
- What does a canonical version of this data look like? Does all of the data from all of these files truly get correlated into one entity (e.g. a "Trade" or a "Transfer" etc.)?
I'd probably start with defining my canonical entity, and then look towards the path of getting a "complete" picture of that canonical entity by using SQL for this kind of case.
来源：https://stackoverflow.com/questions/43753045/how-to-combine-multiple-files-in-biztalk