FAQ: PostgreSQL Database Maintenance - Wrap-Up

This community-built FAQ covers the “Wrap-Up” exercise from the lesson “PostgreSQL Database Maintenance”.

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This exercise can be found in the following Codecademy content:

(Beta) CS103: Databases

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When I run the following query, it returns empty columns. This also happened during the Deletes and Table Size exercise, despite me getting a green check mark to move on in the lesson.

select schemaname, relname, n_dead_tup, n_live_tup

from pg_stat_all_tables

where relname = ‘time_series’;

Works fine for me. I did initially get nothing when I typed: where relname = ‘mock.time_series’, but when I left off the schema name it worked.

Try running the query without the where statement to see if you can find the time_series relname manually.