Let's say I have a table in Vertica database named "my_table" and I want to run a query that will tell me what indexes exist on this table. How can I do it?
There are no such things as indexes in Vertica. Each table has projections (Physical Schema, Working with Projections).
To see what projections a table has, run the following query:
SELECT *
FROM projections
WHERE anchor_table_name = 'my_table';