Error
Error Code:
HV091
PostgreSQL Error HV091: Invalid FDW Descriptor Field
Description
Error HV091 indicates an issue where a Foreign Data Wrapper (FDW) encounters an unrecognized or improperly defined descriptor field identifier. This typically occurs when querying a foreign table, and the FDW cannot correctly map or interpret a column definition from the remote data source.
Error Message
fdw invalid descriptor field identifier
Known Causes
3 known causesMismatched Column Definitions
The column names, data types, or order defined in your PostgreSQL foreign table do not precisely match the actual schema of the remote data source.
Incorrect FDW Options
Configuration options provided during `CREATE FOREIGN SERVER` or `CREATE FOREIGN TABLE` statements are misconfigured, leading to incorrect field interpretation.
Remote Schema Changes
The schema of the external data source has been altered (e.g., column renamed or removed) without updating the corresponding foreign table definition in PostgreSQL.
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