Greetings, Thanks to the suggestions from @Stamatis I was able to fix the build errors and get a successful build. Coming to the main purpose of me trying to use calcite. I am a college student and have been selected to be part of a research project that aims to use Calcite's planner with PostgreSQL. I have looked for resources online but all I find are single use hardcoded programs. My work will comprise of a large database and testing multiple different queries. The website does specify a model.json file to use with sqlline to connect to the data source and then use Sqlline shell, but the only example of a model.json file I found for postgresql was [here <https://stackoverflow.com/questions/64542850/connecting-to-jdbc-database-via-calcite-driver-using-sqlline>]. But it did not work as I kept getting JDBC driver not found error even after rechecking the path multiple times.
Requesting guidance in connecting Calcite to PostgreSQL. Thank you.
