Foreign table created in Parquet format usually contains the following columns:
- Location
- Several other user specified columns in Parquet format specified while creating foreign table
User can create an object of class "tbl_teradata" on a foreign table using "tbl()", similar to creating an object of class "tbl_teradata" on a regular table. With the created tbl_teradata, user can easily access and process the data using various API's offered by tdplyr and other R packages that work with tbl objects.
How to access actual data and path variables
Unlike foreign tables on JSON and CSV format data, tdplyr tbl_teradata on Parquet data provides direct access to the actual data in Parquet files, as described in Accessing Foreign Table Created On Parquet Data.
Path variables from the foreign table can be accessed in one of the following ways: