thanks again, that's the way i'm using the metadata's sheets when i need to create a table, but in this case i'm using them with a different purpose. the data table is the result of a merge between a dinamic number of tables (it can be 2 or 1000). what i want to do is to check if ther's any duplicates by key, if duplicates are presents then in the metadata i have described the weight by attributes coming from each source table. the one with heavier weight overwrite the others wich need to be saved into a dump table for future tracking, the issue here is that the weight are listed by attribute and not by source table.
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