aleksei.bukhalov 16ddaf82e2 docs: add public dataset tutorials for the DuckDB engine ...

Add two step-by-step tutorials:

- NYC Taxi Trips: load TLC Parquet via run_in_duckdb() + read_parquet(),
  keep the zone lookup in InnoDB, then join the two engines in a plain
  SELECT. Follows the structure of the ClickHouse taxi tutorial.

- OWID CO2 Emissions: load a commit-pinned CSV revision, run
  aggregations and a LAG() window function.

Both tutorials point at security-model.md before telling the reader to
enable duckdb_allow_run_in_duckdb, and both note that ordinary
INSERT/UPDATE/DELETE also work on ENGINE=DuckDB tables so that
run_in_duckdb() does not look like the only write path.

Also documents TIMESTAMPDIFF in mariadb-duckdb-incompatibilities.md and
adds a tutorials section to the README.

Every SQL block and every expected output was extracted from the
markdown, executed, and compared cell by cell on MariaDB 11.4.13 built
from this branch; both data sets are pinned so results stay
reproducible.

2026-08-07 21:35:35 +01:00

..

nyc-taxi-trips.md

docs: add public dataset tutorials for the DuckDB engine

2026-08-07 21:35:35 +01:00

owid-co2-emissions.md

docs: add public dataset tutorials for the DuckDB engine

2026-08-07 21:35:35 +01:00