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Wiki / SQLSTATE

HV021 — fdw_inconsistent_descriptor_information

包装器描述符中的信息互相不一致。

英文手册覆盖始于 PostgreSQL 8.1. 来源历史与运行验证各自保留独立版本边界。

当前阅读 PG 18·选择有来源记录的版本

9.19.29.39.49.59.61011121314151617181920
aliases
未知
class name
Foreign Data Wrapper Error (SQL/MED)
condition name
fdw_inconsistent_descriptor_information
lang
en
sqlstate
HV021

版本定义 PG 18

HV021 — fdw_inconsistent_descriptor_information

速览 {#at-a-glance}

HV021 表示 FDW 描述符中的信息不一致。18.6 核心与 contrib 调用扫描没有解析出 HV021 报告组，因此不能指定核心描述符检查或消息。

含义 {#meaning}

描述符可能描述列、类型、名称、长度或其他包装器结果契约。fdwapi.h 展示回调和 slot 边界，但没有说明哪种描述符差异会映射到此 SQLSTATE。

消息与诊断 {#messages}

没有解析出 18.6 核心与 contrib 的直接消息变体。保留完整诊断、描述符类型、消息中出现的期望值和实际值、回调阶段、包装器/驱动版本及关系身份。

诊断 {#diagnosis}

比较包装器提供的描述符与回调或消费者期待的描述符。只有包装器或诊断明确支持时，才检查模式变化、类型与列顺序、可空性或长度元数据；不要从一般转换失败推断描述符不一致。

处理 {#response}

修正实际诊断所指向的包装器描述符构造或远端/模式契约，然后重新建立受影响的计划或对象。若元数据没有改变，重复同一操作不能修复描述符。

版本 {#versions}

HV021 在锁定定义快照 9.1.24 至 18.6 以及 19 Beta 3 中存在，known_present_by 为 9.1.0。现有 9.1 之前定义资料不足以确定精确引入版本。

相关 {#related}

HV008 涉及 FDW 列序列；HV091 涉及描述符字段标识符；HV024 涉及属性值。

来源 {#sources}

  • errcodes.txt — 定义，SHA-256 6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba。
  • fdwapi.h — 通用 FDW 回调接口边界。
  • 结构化证据 — 18.6 固定来源与有界扫描。

比较版本

SQLSTATE 证据与已记录的运行版本

claims · identity
{
  "claim_id": "identity",
  "limits": "",
  "method": "Read the fixed errcodes definition row and macro.",
  "position": 0,
  "runtime": [],
  "sources": [
    "src.errcodes.18.6"
  ],
  "statement": "HV021 is fdw_inconsistent_descriptor_information in SQL/MED Class HV."
}
claims · api-boundary
{
  "claim_id": "api-boundary",
  "limits": "Generic API context is background only and does not prove an emitting path for this SQLSTATE.",
  "method": "Read the fixed FDW callback signatures and FdwRoutine structure.",
  "position": 1,
  "runtime": [],
  "sources": [
    "src.fdwapi.18.6"
  ],
  "statement": "The condition name identifies inconsistent descriptor information at an FDW boundary. The descriptor fields and producer/consumer contract remain implementation-specific."
}
claims · scan-boundary
{
  "claim_id": "scan-boundary",
  "limits": "This scan does not cover external wrappers, drivers, remote systems, or user callbacks; absence from the scan is not an absolute absence claim.",
  "method": "Compare resolved report groups with the fixed macro mapping.",
  "position": 2,
  "runtime": [],
  "sources": [
    "src.calls.REL_18_6",
    "src.errcodes.18.6"
  ],
  "statement": "No resolved HV021 report group was found in the locked PostgreSQL 18.6 core/contrib call scan."
}
claims · history-boundary
{
  "claim_id": "history-boundary",
  "limits": "Definition presence does not prove runtime use.",
  "method": "Compare the canonical release-definition facts with the available pre-9 source boundary.",
  "position": 3,
  "runtime": [],
  "sources": [
    "src.errcodes.18.6"
  ],
  "statement": "The locked release definition snapshots establish presence from the known 9.1.0 boundary; the available pre-9 material does not establish an exact introduction release."
}
sources · src.errcodes.18.6
{
  "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
  "docs_url": "",
  "kind": "upstream_source",
  "location": "",
  "path": "src/backend/utils/errcodes.txt",
  "position": 0,
  "sha256": "6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba",
  "source_id": "src.errcodes.18.6",
  "tag": "REL_18_6",
  "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt"
}
sources · src.fdwapi.18.6
{
  "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
  "docs_url": "",
  "kind": "upstream_source",
  "location": "",
  "path": "src/include/foreign/fdwapi.h",
  "position": 1,
  "sha256": "572ba892e6435ca92d3b3bc84dde5bbd3160cc3a082693daab8daa835c4d2cd7",
  "source_id": "src.fdwapi.18.6",
  "tag": "REL_18_6",
  "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/include/foreign/fdwapi.h"
}
sources · src.calls.REL_18_6
{
  "commit": "",
  "docs_url": "",
  "kind": "local_artifact",
  "location": "",
  "path": "raw/calls/REL_18_6.jsonl",
  "position": 2,
  "sha256": "9ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf",
  "source_id": "src.calls.REL_18_6",
  "tag": "",
  "url": ""
}

来源引用

完整定义与证据 JSON

定义来源

center · PostgreSQL 18 · english-manuals:71d6fe3361cc9940f26a1f6325d6c801096169d7cb9a524588b6fed347cb07f0

正文语言: zh-Hans · english-manuals:71d6fe3361cc9940f26a1f6325d6c801096169d7cb9a524588b6fed347cb07f0