Hi KNIME community,
I’m encountering an issue with the PostgreSQL Connector node in KNIME. I’ve tried passing the database host as a Flow Variable, but when clicking “OK” in the node configuration, I get the error:
“Database host is not defined”
Steps I’ve taken:
- Defined a Flow Variable in the parent workflow’s variables.
- In the PostgreSQL Connector node configuration, selected the variable under Flow Variables for the “Host” field.
- Confirmed the variable name matches exactly (case-sensitive) and is properly scoped.
Expected behavior:
The node should accept the host value from the Flow Variable.
Actual behavior:
The error persists even after mapping the variable. If I hardcode the host directly in the node, it works fine.