# HV007 — fdw_invalid_column_name

> PostgreSQL SQLSTATE HV007 denotes an invalid column name passed through an FDW descriptor or callback. Check wrapper naming rules and quoting.
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# HV007 — fdw_invalid_column_name

## At a glance {#at-a-glance}

`HV007` is an FDW-specific invalid-column-name condition. The 18.6 core/contrib scan found no direct report group, so the wrapper that validates the name and its message must be identified from the actual deployment.

<!-- BEGIN SQLSTATE FACTS: generated by scripts/generate.py; do not edit -->

| Field | Value |
| --- | --- |
| SQLSTATE | `HV007` |
| Condition | `fdw_invalid_column_name` |
| Status | `active` |
| Known present by | `9.1.0` |
| Locked snapshots | `9.1.24, 9.2.24, 9.3.25, 9.4.26, 9.5.25, 9.6.24, 10.23, 11.22, 12.22, 13.23, 14.24, 15.19, 16.15, 17.11, 18.6, 19beta3` |
| Macros | `ERRCODE_FDW_INVALID_COLUMN_NAME` |
| Aliases | `—` |

<!-- source facts: data/errcodes/HV007.json -->
<!-- END SQLSTATE FACTS -->

## Meaning {#meaning}

The name reached the FDW API but violates the wrapper's accepted descriptor or remote naming rules. That is different from `HV005`, where a name is valid in form but cannot be found, and from core `42703` on a local SQL query.

## Messages and diagnostics {#messages}

No fixed PostgreSQL core message is confirmed. Preserve the original quoted/unquoted name, case folding, foreign table, callback phase, and wrapper version.

## Diagnosis {#diagnosis}

Inspect the wrapper's name parser and remote identifier rules. Compare `pg_attribute.attname`, generated query identifiers, and any quoted or case-sensitive remote names. Locate the wrapper's pinned source before assigning a repair to PostgreSQL itself.

## Response {#response}

Use a name accepted by both the local foreign-table definition and the remote system, or configure the wrapper's explicit name mapping. Rebuild the foreign descriptor after changing metadata; repeating the same statement is not useful.

## Versions {#versions}

`HV007` is present from 9.1.0 through 18.6 and 19 Beta 3. The available pre-9 source definition scan did not observe this SQLSTATE.

## Related {#related}

[`HV005`](../hv005/) is “column name not found”; [`HV008`](../hv008/) is an invalid column number; [`42703`](../42703/) is the local undefined-column code.

## Sources {#sources}

- [`errcodes.txt`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L465) — definition, SHA-256 `6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba`.
- [`fdwapi.h`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/include/foreign/fdwapi.h#L24-L55) — callback boundary.
- [Structured evidence](../data/evidence/hv007.json) — bounded scan and source boundary.