question related to pg_stat_database

Hello pg_users,

we have just migrated an application from mysql to postgresql

we use csharp+npgsql to develo application

I need to monitor Postgresql statistics at regular intervals.

I came across pg_stat_database and especially the columns tulip_fetched and tup_returned.

Is there anything to worry , when comparing both figures.

For ex. my server reports

tulip_fetched = 736555240

tulip_returned = 99888791 (almost 10% of fetched)



thanx.