-- Don't forget to first sign-in through sso using aws sso login CREATE OR REPLACE SECRET secret( TYPE s3, PROVIDER credential_chain ); -- first let's create a Ducklake catalog CREATE SECRET( TYPE postgres, HOST '', PORT 6543, DATABASE postgres, USER '', PASSWORD '' ); INSTALL ducklake; INSTALL postgres; from duckdb_extensions(); ATTACH 'ducklake:postgres:dbname=postgres' AS mehdio_ducklake(DATA_PATH 's3://tmp-mehdio/ducklake/'); use mehdio_ducklake; -- how the data looks like DESCRIBE TABLE 's3://us-prd-motherduck-open-datasets/who_ambient_air_quality/csv/who_ambient_air_quality_database_version_2024.csv'; FROM 's3://us-prd-motherduck-open-datasets/who_ambient_air_quality/csv/who_ambient_air_quality_database_version_2024.csv'; -- creating my first ducklake table CREATE TABLE who_ambient_air_quality_2024 AS SELECT * FROM 's3://us-prd-motherduck-open-datasets/who_ambient_air_quality/csv/who_ambient_air_quality_database_version_2024.csv'; -- show the snapshots from mehdio_ducklake.snapshots(); -- show the parquet files FROM glob('s3://tmp-mehdio/ducklake/*.parquet'); ALTER TABLE who_ambient_air_quality_2024 ADD COLUMN iso2 VARCHAR; UPDATE who_ambient_air_quality_2024 SET iso2 = 'DE' WHERE iso3 = 'DEU'; FROM who_ambient_air_quality_2024 where iso2 = 'DE'; FROM glob('s3://tmp-mehdio/ducklake/*.parquet'); FROM 's3://tmp-mehdio/ducklake/ducklake-019730a7-55b6-7096-a543-a0eaa871499d-delete.parquet'; ALTER TABLE who_ambient_air_quality_2024 DROP COLUMN iso3; FROM mehdio_ducklake.snapshots(); SELECT iso2 FROM who_ambient_air_quality_2024 AT (VERSION => 3) where iso2 is not null;