Duckdbtest

[mbroecheler]

Temporal joins don't seem to work with Iceberg.

Running sqrl run -c package-analytics-simple.json works.
Running sqrl run -c package-analytics-duckdb.json does not.
The scripts are identical. The only difference is postgres vs iceberg+duckdb.

[Zesky665]

The test has been updated and expanded.

It now checks the merchant, card assignment, and transaction tables.
It also checks if the transaction data is available in GraphQL.

The test right now is flaky, because sometimes the transactions table (the ones with temporal joins) is not populated by the time the test query runs.

As of the time of writing, there was an error with the finance-creditcard-example where trying to query the transactions data manually via graphql returned an error thrown by duckdb caused by duckdb receiving a empty result.

PS: I changed the Apache-iceberg directory to a folder inside of the example directory for easier local debugging.