In the previous post we discussed the basics of data warehousing and the different commonly used database schemas associated with it. We also set up a couple of tables: one raw data table which we filled with some raw data records, two dimension tables and a fact table.
In this post we’ll build upon the existing tables and present a couple of useful Postgresql statements in RedShift. Keep in mind that Postgresql in RedShift is very limited compared to the full version so you often need to be resourceful.
Fill in the dimension tables
Recall that we have 2 dimension tables: DimUrl and DimCustomer. Both are referenced from the fact table by their primary keys. We haven’t added any data into them yet. We’ll do that now.
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