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What columns are in your database?

Just like pg_catalog.pg_tables can be incredibly helpful for listing all the tables in your database, information_schema.columns can be used to list the columns of these tables. In this exercise, you will combine these system tables to get a list of all of the columns for all your tables (in the 'public' schema).

Note: These system tables are specific to PostgreSQL but similar tables exist for other databases (see slides).

This exercise is part of the course

Applying SQL to Real-World Problems

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Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

-- Select all columns from the information_schema.columns table
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