Exercise

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).

Instructions 1/2

XP

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View all of the data in the information_schema.columns table by SELECTing all the columns within it.

Take Hint (-15 XP)