When you view your team usage page, it shows you an unexpected value for "Heroku Connect rows synced" value and you want to understand how this number is calculated.
This number is the total number of rows being kept in sync across all of your connections, including connections to both production and sandbox organizations. Even if your objects don't see many updates throughout a month, the number will be the sum of the number of rows across all tables.
You can verify these numbers by issuing
COUNT(*) queries against your mapped tables, e.g.,
-- Find the number of synchronized rows in the Connection with schema "salesforce" and table "account" SELECT COUNT(*) FROM salesforce.account ;
This process could be labor intensive though, so to get an estimate one could do something like:
SELECT SUM(reltuples::BIGINT) as approximate_usage FROM pg_class WHERE relname IN ( SELECT CONCAT(table_schema, '.', table_name) as fq_name FROM information_schema.tables WHERE table_schema = 'salesforce' AND -- ignore Connect system tables table_name NOT LIKE '\_%' ) OR relname IN ( SELECT table_name FROM information_schema.tables WHERE table_schema = 'salesforce' AND table_name NOT LIKE '\_%' ) ;