{"Entry":{"collection":"sqlstate","key":"2203G","name":"2203G","aliases":[],"metadata":{"aliases":[],"case_count":0,"class_code":"22","condition_name":"sql_json_item_cannot_be_cast_to_target_type","condition_names":["sql_json_item_cannot_be_cast_to_target_type"],"content_hash":"c187bb8f60ac23ed298ecf330343bc2fd7ea03cd4688f89133883617bea9a281","depth":"reference","editorial_review":"reviewed","evidence_tier":"source_path_confirmed","imported_at":"2026-09-30T17:45:27.129638+08:00","introduced":null,"known_present_by":"15.0","macros":["ERRCODE_SQL_JSON_ITEM_CANNOT_BE_CAST_TO_TARGET_TYPE"],"name_zh":"","present_in":["15","16","17","18","19"],"preview_in":["19"],"primary_macro":"ERRCODE_SQL_JSON_ITEM_CANNOT_BE_CAST_TO_TARGET_TYPE","removed":null,"runtime_verification":"not_run","severity_classes":["E"],"snippet_count":0,"source_rev":"english-manuals:49c08c496865b82ca59329fca3119793a5421e682bccef5319bc5702a8e6b8a0","sqlstate":"2203G","status":"active","summary_zh":"SQL/JSON 项无法转换为目标类型。"}},"Definition":{"Collection":"sqlstate","Key":"2203G","SourceDatabase":"center","Version":"18","SourceTable":"sqlstate","SourceKey":"2203G","SourceRevision":"english-manuals:49c08c496865b82ca59329fca3119793a5421e682bccef5319bc5702a8e6b8a0","Facts":{"aliases":[],"class_name":"Data Exception","condition_name":"sql_json_item_cannot_be_cast_to_target_type","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"2203G"},"ManualEvidence":{"doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"sqlstate","Key":"2203G","SourceDatabase":"center","Version":"","Locale":"zh-Hans","Title":"2203G — sql_json_item_cannot_be_cast_to_target_type","Summary":"SQL/JSON 项无法转换为目标类型。","BodyHTML":"\u003ch1\u003e2203G\u003c/h1\u003e\n\u003ch2\u003e速览 {#at-a-glance}\u003c/h2\u003e\n\u003cp\u003e\u003ccode\u003e2203G\u003c/code\u003e 是目录条件 \u003ccode\u003esql_json_item_cannot_be_cast_to_target_type\u003c/code\u003e。在固定的 PostgreSQL 18.6 树中，有界搜索只在 \u003ccode\u003eerrcodes.txt\u003c/code\u003e 找到宏定义，没有找到核心代码或 contrib 中实际发出该条件的调用。因此这是一页仅有定义边界的参考；看起来相似的 JSON 转换不能证明服务器使用了这个 SQLSTATE。\u003c/p\u003e\n\u003ch2\u003e含义 {#meaning}\u003c/h2\u003e\n\u003cp\u003e固定目录给出了 SQL/JSON 条件名，但 18.6 有界源码扫描没有找到 PostgreSQL 核心代码或 contrib 的发出路径。不能把这个名字扩展成未经证实的 JSONPath、构造器、标量/数组或对象转换场景。扩展或用户自定义 \u003ccode\u003eRAISE\u003c/code\u003e 可以自行使用该状态码，但那不属于固定源码树的结果。\u003c/p\u003e\n\u003ch2\u003e诊断 {#diagnosis}\u003c/h2\u003e\n\u003cp\u003e保留完整 SQLSTATE、主消息/详细信息/提示、服务器日志上下文、语句，以及产生它的扩展或函数。用这些证据识别真正的发出者，不要只因文字像 JSON、普通类型输入或其他转换失败就归类为 \u003ccode\u003e2203G\u003c/code\u003e。\u003c/p\u003e\n\u003ch2\u003e报文 {#messages}\u003c/h2\u003e\n\u003cp\u003e本次没有为这个仅有定义的条目解析出固定 PostgreSQL 18.6 主消息、详细信息或提示模板。\u003c/p\u003e\n\u003ch2\u003e处理 {#response}\u003c/h2\u003e\n\u003cp\u003e这个仅定义条目没有 PostgreSQL 核心代码提供的、有源码依据的处置方法。先确认实际发出者，再修正该发出者的契约并重试受影响的操作。如果实际发出的是 ERROR 且处于显式事务中，先执行 \u003ccode\u003eROLLBACK\u003c/code\u003e 或 \u003ccode\u003eROLLBACK TO SAVEPOINT\u003c/code\u003e；自动提交模式下先修正原因，再重新提交操作。这个条件定义本身不要求重置连接。\u003c/p\u003e\n\u003ch2\u003e版本 {#versions}\u003c/h2\u003e\n\u003cp\u003e锁定目录从 PostgreSQL \u003ccode\u003e15.0\u003c/code\u003e 记录此条件。本次固定源码边界是 PostgreSQL 18.6 \u003ccode\u003eREL_18_6\u003c/code\u003e；固定源码树中未找到发出者，不能据此确定任何具体实现路径何时引入或其行为，也不能推断扩展或未来版本的行为。\u003c/p\u003e\n\u003ch2\u003e相关 {#related}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/wiki/sqlstate/2203F/\" rel=\"nofollow\"\u003e\u003ccode\u003e2203F\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003ch2\u003e来源 {#sources}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L231\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/utils/errcodes.txt#L231\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e结构化\u003ca href=\"#sources\" rel=\"nofollow\"\u003e证据记录\u003c/a\u003e保存固定定义和有界源码扫描的限制；本页没有运行观察。\u003c/p\u003e\n","SourceRevision":"english-manuals:49c08c496865b82ca59329fca3119793a5421e682bccef5319bc5702a8e6b8a0","ContentHash":"2df461a72272dc96514f3006b8494e85c3092703bd0538d3ee78fb0f0d91e13e","Payload":{"body_md":"\n# 2203G\n\n## 速览 {#at-a-glance}\n`2203G` 是目录条件 `sql_json_item_cannot_be_cast_to_target_type`。在固定的 PostgreSQL 18.6 树中，有界搜索只在 `errcodes.txt` 找到宏定义，没有找到核心代码或 contrib 中实际发出该条件的调用。因此这是一页仅有定义边界的参考；看起来相似的 JSON 转换不能证明服务器使用了这个 SQLSTATE。\n\n\n## 含义 {#meaning}\n固定目录给出了 SQL/JSON 条件名，但 18.6 有界源码扫描没有找到 PostgreSQL 核心代码或 contrib 的发出路径。不能把这个名字扩展成未经证实的 JSONPath、构造器、标量/数组或对象转换场景。扩展或用户自定义 `RAISE` 可以自行使用该状态码，但那不属于固定源码树的结果。\n\n## 诊断 {#diagnosis}\n保留完整 SQLSTATE、主消息/详细信息/提示、服务器日志上下文、语句，以及产生它的扩展或函数。用这些证据识别真正的发出者，不要只因文字像 JSON、普通类型输入或其他转换失败就归类为 `2203G`。\n\n## 报文 {#messages}\n本次没有为这个仅有定义的条目解析出固定 PostgreSQL 18.6 主消息、详细信息或提示模板。\n\n## 处理 {#response}\n这个仅定义条目没有 PostgreSQL 核心代码提供的、有源码依据的处置方法。先确认实际发出者，再修正该发出者的契约并重试受影响的操作。如果实际发出的是 ERROR 且处于显式事务中，先执行 `ROLLBACK` 或 `ROLLBACK TO SAVEPOINT`；自动提交模式下先修正原因，再重新提交操作。这个条件定义本身不要求重置连接。\n\n## 版本 {#versions}\n锁定目录从 PostgreSQL `15.0` 记录此条件。本次固定源码边界是 PostgreSQL 18.6 `REL_18_6`；固定源码树中未找到发出者，不能据此确定任何具体实现路径何时引入或其行为，也不能推断扩展或未来版本的行为。\n\n## 相关 {#related}\n[`2203F`](/wiki/sqlstate/2203F/)\n\n## 来源 {#sources}\n[`src/backend/utils/errcodes.txt#L231`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L231)\n\n结构化[证据记录](#sources)保存固定定义和有界源码扫描的限制；本页没有运行观察。\n","description":"PostgreSQL SQLSTATE 2203G 的来源与诊断参考。","is_stale":false,"name":"","sections":[{"anchor":"","heading":"","html":"\u0026lt;h1\u0026gt;2203G\u0026lt;/h1\u0026gt;"},{"anchor":"at-a-glance","heading":"速览","html":"\u003cp\u003e\u003ccode\u003e2203G\u003c/code\u003e 是目录条件 \u003ccode\u003esql_json_item_cannot_be_cast_to_target_type\u003c/code\u003e。在固定的 PostgreSQL 18.6 树中，有界搜索只在 \u003ccode\u003eerrcodes.txt\u003c/code\u003e 找到宏定义，没有找到核心代码或 contrib 中实际发出该条件的调用。因此这是一页仅有定义边界的参考；看起来相似的 JSON 转换不能证明服务器使用了这个 SQLSTATE。\u003c/p\u003e"},{"anchor":"meaning","heading":"含义","html":"\u003cp\u003e固定目录给出了 SQL/JSON 条件名，但 18.6 有界源码扫描没有找到 PostgreSQL 核心代码或 contrib 的发出路径。不能把这个名字扩展成未经证实的 JSONPath、构造器、标量/数组或对象转换场景。扩展或用户自定义 \u003ccode\u003eRAISE\u003c/code\u003e 可以自行使用该状态码，但那不属于固定源码树的结果。\u003c/p\u003e"},{"anchor":"diagnosis","heading":"诊断","html":"\u003cp\u003e保留完整 SQLSTATE、主消息/详细信息/提示、服务器日志上下文、语句，以及产生它的扩展或函数。用这些证据识别真正的发出者，不要只因文字像 JSON、普通类型输入或其他转换失败就归类为 \u003ccode\u003e2203G\u003c/code\u003e。\u003c/p\u003e"},{"anchor":"messages","heading":"报文","html":"\u003cp\u003e本次没有为这个仅有定义的条目解析出固定 PostgreSQL 18.6 主消息、详细信息或提示模板。\u003c/p\u003e"},{"anchor":"response","heading":"处理","html":"\u003cp\u003e这个仅定义条目没有 PostgreSQL 核心代码提供的、有源码依据的处置方法。先确认实际发出者，再修正该发出者的契约并重试受影响的操作。如果实际发出的是 ERROR 且处于显式事务中，先执行 \u003ccode\u003eROLLBACK\u003c/code\u003e 或 \u003ccode\u003eROLLBACK TO SAVEPOINT\u003c/code\u003e；自动提交模式下先修正原因，再重新提交操作。这个条件定义本身不要求重置连接。\u003c/p\u003e"},{"anchor":"versions","heading":"版本","html":"\u003cp\u003e锁定目录从 PostgreSQL \u003ccode\u003e15.0\u003c/code\u003e 记录此条件。本次固定源码边界是 PostgreSQL 18.6 \u003ccode\u003eREL_18_6\u003c/code\u003e；固定源码树中未找到发出者，不能据此确定任何具体实现路径何时引入或其行为，也不能推断扩展或未来版本的行为。\u003c/p\u003e"},{"anchor":"related","heading":"相关","html":"\u003cp\u003e\u003ca href=\"/wiki/sqlstate/2203F/\"\u003e\u003ccode\u003e2203F\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e"},{"anchor":"sources","heading":"来源","html":"\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L231\"\u003e\u003ccode\u003esrc/backend/utils/errcodes.txt#L231\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e结构化\u003ca href=\"#sources\"\u003e证据记录\u003c/a\u003e保存固定定义和有界源码扫描的限制；本页没有运行观察。\u003c/p\u003e"}],"summary":"SQL/JSON 项无法转换为目标类型。","title":"2203G — sql_json_item_cannot_be_cast_to_target_type","translation_source_rev":"60a6da9d58ba12c6421c7c0049e6281595b1ce8f82808415db76a14eccca6870"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":{"aliases":[],"catalogue_notes":{"earliest_observed":"15.0","formal_scope":"9.0.0..18.6","latest_observed":"18.6","matrix_scope":["9.0.23","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"],"pre9_scope":{"formal_tag_count":191,"maximum_release":"8.4.22","minimum_release":"7.0.0","source_definition_count":153,"source_doc_count":153,"source_file_count":306,"source_scope":"7.4..8.4 definition files; 7.0..7.3 candidate-path source gap probes","source_tag_count":153},"pre9_status":"not_observed","preview_scope":["19beta3"]},"class":"22","class_name":"Data Exception","condition_name":"sql_json_item_cannot_be_cast_to_target_type","condition_names":["sql_json_item_cannot_be_cast_to_target_type"],"definition_changes":[],"english_manuals":{"15":{"aliases":[],"class_name":"Data Exception","condition_name":"sql_json_item_cannot_be_cast_to_target_type","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2161f58f6e87f6535b3b1f3d4661427bb6765f4f6b074fcc16fac97594b50599","slug":"15"},"lang":"en","sqlstate":"2203G"},"16":{"aliases":[],"class_name":"Data Exception","condition_name":"sql_json_item_cannot_be_cast_to_target_type","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"928e705933d7c3d018ae3fba9d800b34e6325746d157339dce878473c519d100","slug":"16"},"lang":"en","sqlstate":"2203G"},"17":{"aliases":[],"class_name":"Data 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