Error
Error Code:
HV007
PostgreSQL Error HV007: FDW Invalid Column Reference
Description
This error indicates that a Foreign Data Wrapper (FDW) operation encountered a column name that is not recognized or does not exist in the foreign table definition. It typically occurs when querying or manipulating data through an FDW where there's a mismatch between the local foreign table's column definitions and the remote table's actual structure.
Error Message
fdw invalid column name
Known Causes
4 known causesMismatched Column Names
The column name specified in the local foreign table definition does not exactly match a column name on the remote server.
Non-existent Remote Column
The referenced column simply does not exist in the underlying table on the foreign server being accessed via FDW.
Case Sensitivity Issues
The remote database might be case-sensitive for identifiers, and the column name used in the FDW definition does not match the exact casing on the remote system.
Outdated Foreign Table Definition
The schema of the remote table has changed (e.g., a column was renamed or dropped), but the local foreign table definition has not been updated.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service