NOTE: this post deals with files-based partitioning
For some reason, dataiku removes the partitioning dimension(s) when a dataset is (files-based) partitioned using a sync recipe.
See for example this hands-on tutorial: "Dataiku DSS warns that a schema update is required. This is because redispatching removes the purchase_date column [= partitioning dimension] when our dataset is stored on a file system".
This behaviour can be annoying as it prevents:
An easy work-around consists in duplicating the partitioning column(s) by renaming them, but this sounds like code smell.
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