Saving the data in Delta format is as simple as replacing the .format(“parquet”) function with .format(“delta”). However, we see a major difference when we look at the table creation. When creating a table using Delta, we don’t have to specify the schema, because the schema is already strongly defined when we save the data. We also see that Delta tables can be easily queried using the same SQL we’re used to. Next, let’s compare what the raw files look like by examining the blob storage container that we are storing them in.
There are some good demos in this post and it promises to be a nice series.