DL
Hi all,
I seperated one data feed into two to filter data into two categories and added some information to them. After that I combine both data feeds to have both information in one feed. Well, no problems in the "feed designer". The previewed that looks good and the number of rows are still the same. But as soon as I start the mash, the rows were multiplied to more than 3000 rows. The original number was 529. I have absolutly no idea why mash up is multipling the rows. Through testing I found out, that the reason must be in devision of the data feed and the "re-combination" of them. Any ideas why?
Thanks, Dominic
Dominic,
although I don't know your data it is likely you experienced join-problems. First of all, the preview in the feed editor shows the first 100 lines, only. Since MashZone 2.0 you may instruct it to show everything.
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So why does your result contain more rows than your input does? This is the very nature of join/combine.
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If you carefully inspect the operator, you will see that there is an allow multiple values option which defaults to false. And the left and right hand input connection matters. So think of a look-up operation. For each row in your left hand data feed the combine operator finds the matching row from the right hand one.
Further info on this topic is provided by MashZone help or even more here.
Regards
Stephan
Thanks for your reply!
So, well the help tolds me, that the thing works like expected. :) I'll try another way to get the result. Proberly it's because of one of the previous operations.
However, it's still strange, that if I try the the complete mash with only 20 rows in the source file, everything goes fine, but as soon as I use a bigger source file, the result is multiplied in the mash.
I'll check it again!
Thanks!
