{"Entry":{"collection":"sqlstate","key":"22030","name":"22030","aliases":[],"metadata":{"aliases":[],"case_count":0,"class_code":"22","condition_name":"duplicate_json_object_key_value","condition_names":["duplicate_json_object_key_value"],"content_hash":"43c93db612608d2aacd56d5f672f2cf5c857e44478ee630bbd87b656c8e0e36e","depth":"reference","editorial_review":"reviewed","evidence_tier":"source_path_confirmed","imported_at":"2026-09-30T17:45:27.083408+08:00","introduced":null,"known_present_by":"12.0","macros":["ERRCODE_DUPLICATE_JSON_OBJECT_KEY_VALUE"],"name_zh":"","present_in":["12","13","14","15","16","17","18","19"],"preview_in":["19"],"primary_macro":"ERRCODE_DUPLICATE_JSON_OBJECT_KEY_VALUE","removed":null,"runtime_verification":"not_run","severity_classes":["E"],"snippet_count":0,"source_rev":"english-manuals:78c0cba9e069ad8f0f295af9d5b5e0f34b26e97ed6847d6ad96b43a148c7d75b","sqlstate":"22030","status":"active","summary_zh":"构造 JSON 对象时出现重复键。"}},"Definition":{"Collection":"sqlstate","Key":"22030","SourceDatabase":"center","Version":"18","SourceTable":"sqlstate","SourceKey":"22030","SourceRevision":"english-manuals:78c0cba9e069ad8f0f295af9d5b5e0f34b26e97ed6847d6ad96b43a148c7d75b","Facts":{"aliases":[],"class_name":"Data Exception","condition_name":"duplicate_json_object_key_value","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"22030"},"ManualEvidence":{"doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"sqlstate","Key":"22030","SourceDatabase":"center","Version":"","Locale":"zh-Hans","Title":"22030 — duplicate_json_object_key_value","Summary":"构造 JSON 对象时出现重复键。","BodyHTML":"\u003ch1\u003e22030\u003c/h1\u003e\n\u003ch2\u003e速览 {#at-a-glance}\u003c/h2\u003e\n\u003cp\u003e构造 JSON 对象时遇到重复键。固定的 JSON 唯一键构造器和聚合路径报告 \u003ccode\u003eduplicate JSON object key value: %s\u003c/code\u003e；JSONB 对象收尾有相关变体。\u003c/p\u003e\n\u003ch2\u003e报文 {#messages}\u003c/h2\u003e\n\u003cp\u003e唯一键路径使用以下首要文本：\u003c/p\u003e\n\u003cp\u003e| 路径 | 首要文本 |\n| --- | --- |\n| 启用唯一键的 JSON 构造器或聚合 | \u003ccode\u003eduplicate JSON object key value: %s\u003c/code\u003e |\n| JSONB 对象收尾或唯一键校验 | \u003ccode\u003eduplicate JSON object key value\u003c/code\u003e |\u003c/p\u003e\n\u003ch2\u003e含义 {#meaning}\u003c/h2\u003e\n\u003cp\u003e当 JSON 对象操作明确启用键唯一性，并在同一对象中再次遇到同名键时，会报告 22030。JSON 构造器和对象聚合携带 \u003ccode\u003eunique_keys\u003c/code\u003e 标志；唯一键变体记录已见键，并在插入或对象收尾时报告错误。普通 \u003ccode\u003ejson\u003c/code\u003e/\u003ccode\u003ejsonb\u003c/code\u003e 输入将该标志设为 false，普通构造器或聚合也不会把输入文本中的每个重复键都变成 22030。strict 或 absent-on-null 变体会从输出中省略 NULL 值，但唯一键变体仍会保留键并检查唯一性，因此即使值将被跳过，重复键仍可能失败。对象键本身为 NULL 属于独立的参数错误。\u003c/p\u003e\n\u003ch2\u003e诊断 {#diagnosis}\u003c/h2\u003e\n\u003cp\u003e确认构造器或聚合，以及其文档规定的形式是否强制唯一键。JSON 构造器/聚合路径的 \u003ccode\u003e%s\u003c/code\u003e 报文会给出重复键；JSONB 收尾和校验路径使用较短的首要文本。区分重复键策略、无效 JSON 语法、NULL 对象键，以及按普通语义允许重复输入的 \u003ccode\u003ejson\u003c/code\u003e/\u003ccode\u003ejsonb\u003c/code\u003e 解析。\u003c/p\u003e\n\u003ch2\u003e处理 {#response}\u003c/h2\u003e\n\u003cp\u003e按所属实现的重复键策略处理：需要唯一性时在上游去重或汇总；只有在确实要保留重复键语义时，才使用文档规定的非唯一操作。不要通过修改唯一键标志来解决 NULL 键或格式错误的 JSON。如果 ERROR 发生在显式事务中，应先 ROLLBACK 或回滚到既有保存点再重试；自动提交可重试修正后的动作。\u003c/p\u003e\n\u003ch2\u003e版本 {#versions}\u003c/h2\u003e\n\u003cp\u003e锁定目录从 12.0 起记录该条件；本页固定 JSON 和 JSONB 源码路径为 PostgreSQL 18.6。未声称本页有自然运行观察。\u003c/p\u003e\n\u003ch2\u003e相关 {#related}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/wiki/sqlstate/22032/\" rel=\"nofollow\"\u003e\u003ccode\u003e22032\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/22023/\" rel=\"nofollow\"\u003e\u003ccode\u003e22023\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003ch2\u003e来源 {#sources}\u003c/h2\u003e\n\u003cp\u003eJSON 唯一键构造器和聚合见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1002\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/utils/adt/json.c#L1002-1127\u003c/code\u003e\u003c/a\u003e 和 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1224\" rel=\"nofollow\"\u003e\u003ccode\u003e#L1224-1295\u003c/code\u003e\u003c/a\u003e；JSON 唯一性校验见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1810\" rel=\"nofollow\"\u003e\u003ccode\u003e#L1810-1853\u003c/code\u003e\u003c/a\u003e。JSONB 普通输入在 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L74\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/utils/adt/jsonb.c#L74-102\u003c/code\u003e\u003c/a\u003e 中关闭唯一性；唯一键构造和对象收尾见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L1125\" rel=\"nofollow\"\u003e\u003ccode\u003e#L1125-1163\u003c/code\u003e\u003c/a\u003e 与 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb_util.c#L1952\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/utils/adt/jsonb_util.c#L1952-2005\u003c/code\u003e\u003c/a\u003e。结构化\u003ca href=\"#sources\" rel=\"nofollow\"\u003e证据记录\u003c/a\u003e保留唯一键和 NULL 跳过边界；本页未运行自然案例。\u003c/p\u003e\n","SourceRevision":"english-manuals:78c0cba9e069ad8f0f295af9d5b5e0f34b26e97ed6847d6ad96b43a148c7d75b","ContentHash":"2d68e1d19d0c5beeb75d2e1a427da997d81ec612330ba0ae8111a15868e6734c","Payload":{"body_md":"# 22030\n\n## 速览 {#at-a-glance}\n构造 JSON 对象时遇到重复键。固定的 JSON 唯一键构造器和聚合路径报告 `duplicate JSON object key value: %s`；JSONB 对象收尾有相关变体。\n\n\n## 报文 {#messages}\n唯一键路径使用以下首要文本：\n\n| 路径 | 首要文本 |\n| --- | --- |\n| 启用唯一键的 JSON 构造器或聚合 | `duplicate JSON object key value: %s` |\n| JSONB 对象收尾或唯一键校验 | `duplicate JSON object key value` |\n\n## 含义 {#meaning}\n当 JSON 对象操作明确启用键唯一性，并在同一对象中再次遇到同名键时，会报告 22030。JSON 构造器和对象聚合携带 `unique_keys` 标志；唯一键变体记录已见键，并在插入或对象收尾时报告错误。普通 `json`/`jsonb` 输入将该标志设为 false，普通构造器或聚合也不会把输入文本中的每个重复键都变成 22030。strict 或 absent-on-null 变体会从输出中省略 NULL 值，但唯一键变体仍会保留键并检查唯一性，因此即使值将被跳过，重复键仍可能失败。对象键本身为 NULL 属于独立的参数错误。\n\n## 诊断 {#diagnosis}\n确认构造器或聚合，以及其文档规定的形式是否强制唯一键。JSON 构造器/聚合路径的 `%s` 报文会给出重复键；JSONB 收尾和校验路径使用较短的首要文本。区分重复键策略、无效 JSON 语法、NULL 对象键，以及按普通语义允许重复输入的 `json`/`jsonb` 解析。\n\n## 处理 {#response}\n按所属实现的重复键策略处理：需要唯一性时在上游去重或汇总；只有在确实要保留重复键语义时，才使用文档规定的非唯一操作。不要通过修改唯一键标志来解决 NULL 键或格式错误的 JSON。如果 ERROR 发生在显式事务中，应先 ROLLBACK 或回滚到既有保存点再重试；自动提交可重试修正后的动作。\n\n## 版本 {#versions}\n锁定目录从 12.0 起记录该条件；本页固定 JSON 和 JSONB 源码路径为 PostgreSQL 18.6。未声称本页有自然运行观察。\n\n## 相关 {#related}\n[`22032`](/wiki/sqlstate/22032/)、[`22023`](/wiki/sqlstate/22023/)\n\n## 来源 {#sources}\nJSON 唯一键构造器和聚合见 [`src/backend/utils/adt/json.c#L1002-1127`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1002) 和 [`#L1224-1295`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1224)；JSON 唯一性校验见 [`#L1810-1853`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1810)。JSONB 普通输入在 [`src/backend/utils/adt/jsonb.c#L74-102`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L74) 中关闭唯一性；唯一键构造和对象收尾见 [`#L1125-1163`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L1125) 与 [`src/backend/utils/adt/jsonb_util.c#L1952-2005`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb_util.c#L1952)。结构化[证据记录](#sources)保留唯一键和 NULL 跳过边界；本页未运行自然案例。\n","description":"PostgreSQL SQLSTATE 22030 的来源与诊断参考。","is_stale":false,"name":"","sections":[{"anchor":"","heading":"","html":"\u0026lt;h1\u0026gt;22030\u0026lt;/h1\u0026gt;"},{"anchor":"at-a-glance","heading":"速览","html":"\u003cp\u003e构造 JSON 对象时遇到重复键。固定的 JSON 唯一键构造器和聚合路径报告 \u003ccode\u003eduplicate JSON object key value: %s\u003c/code\u003e；JSONB 对象收尾有相关变体。\u003c/p\u003e"},{"anchor":"messages","heading":"报文","html":"\u003cp\u003e唯一键路径使用以下首要文本：\u003c/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e路径\u003c/th\u003e\n\u003cth\u003e首要文本\u003c/th\u003e\n\u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e启用唯一键的 JSON 构造器或聚合\u003c/td\u003e\n\u003ctd\u003e\u003ccode\u003eduplicate JSON object key value: %s\u003c/code\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJSONB 对象收尾或唯一键校验\u003c/td\u003e\n\u003ctd\u003e\u003ccode\u003eduplicate JSON object key value\u003c/code\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"},{"anchor":"meaning","heading":"含义","html":"\u003cp\u003e当 JSON 对象操作明确启用键唯一性，并在同一对象中再次遇到同名键时，会报告 22030。JSON 构造器和对象聚合携带 \u003ccode\u003eunique_keys\u003c/code\u003e 标志；唯一键变体记录已见键，并在插入或对象收尾时报告错误。普通 \u003ccode\u003ejson\u003c/code\u003e/\u003ccode\u003ejsonb\u003c/code\u003e 输入将该标志设为 false，普通构造器或聚合也不会把输入文本中的每个重复键都变成 22030。strict 或 absent-on-null 变体会从输出中省略 NULL 值，但唯一键变体仍会保留键并检查唯一性，因此即使值将被跳过，重复键仍可能失败。对象键本身为 NULL 属于独立的参数错误。\u003c/p\u003e"},{"anchor":"diagnosis","heading":"诊断","html":"\u003cp\u003e确认构造器或聚合，以及其文档规定的形式是否强制唯一键。JSON 构造器/聚合路径的 \u003ccode\u003e%s\u003c/code\u003e 报文会给出重复键；JSONB 收尾和校验路径使用较短的首要文本。区分重复键策略、无效 JSON 语法、NULL 对象键，以及按普通语义允许重复输入的 \u003ccode\u003ejson\u003c/code\u003e/\u003ccode\u003ejsonb\u003c/code\u003e 解析。\u003c/p\u003e"},{"anchor":"response","heading":"处理","html":"\u003cp\u003e按所属实现的重复键策略处理：需要唯一性时在上游去重或汇总；只有在确实要保留重复键语义时，才使用文档规定的非唯一操作。不要通过修改唯一键标志来解决 NULL 键或格式错误的 JSON。如果 ERROR 发生在显式事务中，应先 ROLLBACK 或回滚到既有保存点再重试；自动提交可重试修正后的动作。\u003c/p\u003e"},{"anchor":"versions","heading":"版本","html":"\u003cp\u003e锁定目录从 12.0 起记录该条件；本页固定 JSON 和 JSONB 源码路径为 PostgreSQL 18.6。未声称本页有自然运行观察。\u003c/p\u003e"},{"anchor":"related","heading":"相关","html":"\u003cp\u003e\u003ca href=\"/wiki/sqlstate/22032/\"\u003e\u003ccode\u003e22032\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/22023/\"\u003e\u003ccode\u003e22023\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e"},{"anchor":"sources","heading":"来源","html":"\u003cp\u003eJSON 唯一键构造器和聚合见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1002\"\u003e\u003ccode\u003esrc/backend/utils/adt/json.c#L1002-1127\u003c/code\u003e\u003c/a\u003e 和 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1224\"\u003e\u003ccode\u003e#L1224-1295\u003c/code\u003e\u003c/a\u003e；JSON 唯一性校验见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/json.c#L1810\"\u003e\u003ccode\u003e#L1810-1853\u003c/code\u003e\u003c/a\u003e。JSONB 普通输入在 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L74\"\u003e\u003ccode\u003esrc/backend/utils/adt/jsonb.c#L74-102\u003c/code\u003e\u003c/a\u003e 中关闭唯一性；唯一键构造和对象收尾见 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb.c#L1125\"\u003e\u003ccode\u003e#L1125-1163\u003c/code\u003e\u003c/a\u003e 与 \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonb_util.c#L1952\"\u003e\u003ccode\u003esrc/backend/utils/adt/jsonb_util.c#L1952-2005\u003c/code\u003e\u003c/a\u003e。结构化\u003ca href=\"#sources\"\u003e证据记录\u003c/a\u003e保留唯一键和 NULL 跳过边界；本页未运行自然案例。\u003c/p\u003e"}],"summary":"构造 JSON 对象时出现重复键。","title":"22030 — 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