Advanced concepts

Type mapping allows an existing column in the catalog table with a basic type to be mapped (cast) to a higher-level type provided by Data Explorer. Let us consider a catalog table with a float type of column named 'confidence' that stores the predic...

A virtual column is a column whose values are computed during query execution using a chosen function applied over real columns in the catalog table.   The video below shows creating a view with virtual columns. The catalog table has a boundin...