An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.
Hi @Kakehi Shunya (筧 隼弥) in your source you have mentioned wildcard folder path and file path. When we use wildcard, it means that, there can be one or more matches corresponding to the wild card mentioned. For example, in the folder path, if you mention raw* there can be many many matches like raw1, raw_final etc. So it expects us to use merge in the sink. In order to avoid this issue, you either need to mention the folder path and file path in the data set itself, not under the source tab. Or else you need to use merge in the copy behaviour.