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DB SQL - DuckDB in Memory and as local File

<p>Create a local DuckDB database - also creating an in-memory DB</p><p></p><p><strong>KNIME, Databases and SQL</strong></p><p>https://medium.com/p/273e27c9702a</p>

URL: Maven - DuckDB Driver .jar https://mvnrepository.com/artifact/org.duckdb/duckdb_jdbc
URL: DuckDB - toy around with KNIME and SQL https://forum.knime.com/t/when-using-duckdb-with-knime-getting-error-execute-failed-a-local-transaction-already-exists/40828/7?u=mlauber71
URL: DuckDB - KNIME Forum (85514) https://forum.knime.com/t/duckdb-workspace-db-is-empty-local-path-works/85514/4?u=mlauber71
URL: Blog: KNIME, Databases and SQL https://medium.com/p/273e27c9702a

Create a local DuckDB database - also creating an in-memory DB

https://forum.knime.com/t/duckdb-workspace-db-is-empty-local-path-works/85514/4?u=mlauber71

KNIME, Databases and SQL

https://medium.com/p/273e27c9702a

jdbc:duckdb::memory:A DuckDB in memory
DB Connector
Example Data Reader
DB Connection Extractor
DB Table Creator
DB Reader
SELECT * FROM information_schema.schemata
DB Query Reader
SHOW ALL TABLES;
DB Query Reader
locate and create /data/ folder with absolute paths
Collect Local Metadata
SHOW DATABASES;
DB Query Reader
DROP TABLE IF EXISTS main.adult
DB SQL Executor
SHOW DATABASES;
DB Query Reader
VACUUM ANALYZE;
DB SQL Executor
v_duckdb_stringconstruct a dynamicURL
Java Edit Variable (simple)
/data/mydatabase.duckdb
DB Connector
DB Table Creator
DROP TABLE IF EXISTS main.adult
DB SQL Executor
DB Writer
DB Writer

Nodes

Extensions

Links