DB Reader
Source
Executes the input query in the database and retrieves the result into a KNIME data table.
If the node consumes a lot of memory you might want to decrease the "Fetch size" in the "Advanced" tab of the corresponding connector node. The fetch size specifies how many rows are fetched from the database server into KNIME per network round trip. The higher the number the more memory is consumed. However the smaller the number the more network round trips are necessary to fetch large results. Also not all JDBC driver support this option and thus might ignore it.
Input ports
- Type: DB Data DB Data connection with the query to execute.
Output ports
- Type: Data KNIME data table with the result form the database query.