There are enough sample data sets that are available for PostgreSQL, and most of the data sets are implemented by considering real-time business cases.
Find the list of sample data sets that are available for postgres at this URL: https://wiki.postgresql.org/wiki/Sample_Databases.
Benchmarking tools such as
pgBench and BenchmarkSQL will initiate a sample data set, on which they generate a real-time database load and do the benchmarking. In this chapter, to demonstrate a few aspects of the optimizer, let's choose the BenchmarkSQL's catalog tables, which will generate enough data load for this chapter's demonstrations.
BenchmarkSQL is an open source implementation of the popular TPC/C OLTP database benchmark, ...