{"Entry":{"collection":"sqlstate","key":"2203C","name":"2203C","aliases":[],"metadata":{"aliases":[],"case_count":0,"class_code":"22","condition_name":"sql_json_object_not_found","condition_names":["sql_json_object_not_found"],"content_hash":"4c4d5961eb2f29ee7ee7e7e6bb421f7bcf8c66137f8f85b6d5c7fc52943e3754","depth":"reference","editorial_review":"reviewed","evidence_tier":"source_path_confirmed","imported_at":"2026-09-30T17:45:27.117897+08:00","introduced":null,"known_present_by":"12.0","macros":["ERRCODE_SQL_JSON_OBJECT_NOT_FOUND"],"name_zh":"","present_in":["12","13","14","15","16","17","18","19"],"preview_in":["19"],"primary_macro":"ERRCODE_SQL_JSON_OBJECT_NOT_FOUND","removed":null,"runtime_verification":"not_run","severity_classes":["E"],"snippet_count":0,"source_rev":"english-manuals:d0e22ace86901329b1c93975371e1d63d8e00d1733a348765351b8db9da50a24","sqlstate":"2203C","status":"active","summary_zh":"JSON 路径访问器要求对象却收到非对象项。"}},"Definition":{"Collection":"sqlstate","Key":"2203C","SourceDatabase":"center","Version":"18","SourceTable":"sqlstate","SourceKey":"2203C","SourceRevision":"english-manuals:d0e22ace86901329b1c93975371e1d63d8e00d1733a348765351b8db9da50a24","Facts":{"aliases":[],"class_name":"Data Exception","condition_name":"sql_json_object_not_found","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"2203C"},"ManualEvidence":{"doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"sqlstate","Key":"2203C","SourceDatabase":"center","Version":"","Locale":"en","Title":"2203C — sql_json_object_not_found","Summary":"An object-only JSON path accessor or .keyvalue() method received a non-object item. Wildcard member access and object key/value expansion use this structural guard.","BodyHTML":"\u003ch1\u003e2203C\u003c/h1\u003e\n\u003ch2\u003eAt a glance {#at-a-glance}\u003c/h2\u003e\n\u003cp\u003eAn object-only JSON path accessor or \u003ccode\u003e.keyvalue()\u003c/code\u003e method received a non-object item. Wildcard member access and object key/value expansion use this structural guard.\u003c/p\u003e\n\u003ch2\u003eMessages {#messages}\u003c/h2\u003e\n\u003cp\u003eRepresentative primary texts are:\u003c/p\u003e\n\u003cp\u003e| Guard | Primary |\n| --- | --- |\n| Wildcard member accessor receives a non-object | \u003ccode\u003ejsonpath wildcard member accessor can only be applied to an object\u003c/code\u003e |\n| \u003ccode\u003e.keyvalue()\u003c/code\u003e receives a non-object | \u003ccode\u003ejsonpath item method .%s() can only be applied to an object\u003c/code\u003e |\u003c/p\u003e\n\u003ch2\u003eMeaning {#meaning}\u003c/h2\u003e\n\u003cp\u003eThe wildcard member branch accepts a JSON object; its non-object structural mismatch can be ignored when \u003ccode\u003ejspIgnoreStructuralErrors\u003c/code\u003e is true, and an array may be auto-unwrapped in lax mode. \u003ccode\u003e.keyvalue()\u003c/code\u003e may likewise auto-unwrap an array before it requires an object container, but its direct non-object guard uses \u003ccode\u003eRETURN_ERROR\u003c/code\u003e: throwing versus returning \u003ccode\u003ejperError\u003c/code\u003e follows \u003ccode\u003ejspThrowErrors\u003c/code\u003e, as selected by the caller\u0026#39;s silent or ON ERROR handling. Lax mode itself does not suppress this direct \u003ccode\u003e.keyvalue()\u003c/code\u003e guard. Named member access with a missing key is 2203A, while array-only access is 22039.\u003c/p\u003e\n\u003ch2\u003eDiagnosis {#diagnosis}\u003c/h2\u003e\n\u003cp\u003eUse the primary to identify the wildcard accessor or item method, then inspect the current item type. Distinguish an object receiver that lacks a named key from a scalar/array receiver that cannot support object expansion. Check lax auto-unwrap and structural-error handling before treating the result as a missing item.\u003c/p\u003e\n\u003ch2\u003eResponse {#response}\u003c/h2\u003e\n\u003cp\u003eSelect an object, normalize the input shape, or branch before applying the object-only operation. For wildcard access, use lax structural suppression only when dropping a non-object branch is intended. For \u003ccode\u003e.keyvalue()\u003c/code\u003e, lax can only unwrap an array first; a remaining non-object follows the direct throw/silent/ON ERROR path, so do not assume lax suppression will ignore it. If an ERROR occurred in an explicit transaction, roll back or roll back to the existing savepoint before retrying; autocommit can retry the corrected action.\u003c/p\u003e\n\u003ch2\u003eVersions {#versions}\u003c/h2\u003e\n\u003cp\u003eThe locked catalogue records this condition from 12.0; the fixed object-only accessor and \u003ccode\u003e.keyvalue()\u003c/code\u003e guards are PostgreSQL 18.6. No natural runtime observation is claimed for this page.\u003c/p\u003e\n\u003ch2\u003eRelated {#related}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/wiki/sqlstate/22039/\" rel=\"nofollow\"\u003e\u003ccode\u003e22039\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sqlstate/2203A/\" rel=\"nofollow\"\u003e\u003ccode\u003e2203A\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sqlstate/22037/\" rel=\"nofollow\"\u003e\u003ccode\u003e22037\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003ch2\u003eSources {#sources}\u003c/h2\u003e\n\u003cp\u003eThe wildcard member guard is \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L852\" rel=\"nofollow\"\u003e\u003ccode\u003ejsonpath_exec.c#L852-874\u003c/code\u003e\u003c/a\u003e, and \u003ccode\u003e.keyvalue()\u003c/code\u003e checks its object container at \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L2806\" rel=\"nofollow\"\u003e\u003ccode\u003e#L2806-2828\u003c/code\u003e\u003c/a\u003e. The shared strict/lax and throw-return macros are \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L235\" rel=\"nofollow\"\u003e\u003ccode\u003ejsonpath_exec.c#L235-249\u003c/code\u003e\u003c/a\u003e. The structured \u003ca href=\"#sources\" rel=\"nofollow\"\u003eevidence record\u003c/a\u003e binds both object-only primaries; no natural runtime was run.\u003c/p\u003e\n","SourceRevision":"english-manuals:d0e22ace86901329b1c93975371e1d63d8e00d1733a348765351b8db9da50a24","ContentHash":"2fc25a40d98c5f7d1ad66a271b145414fdade7f428ab3a36a096a1ba68d5c47d","Payload":{"body_md":"# 2203C\n\n## At a glance {#at-a-glance}\nAn object-only JSON path accessor or `.keyvalue()` method received a non-object item. Wildcard member access and object key/value expansion use this structural guard.\n\n\n## Messages {#messages}\nRepresentative primary texts are:\n\n| Guard | Primary |\n| --- | --- |\n| Wildcard member accessor receives a non-object | `jsonpath wildcard member accessor can only be applied to an object` |\n| `.keyvalue()` receives a non-object | `jsonpath item method .%s() can only be applied to an object` |\n\n## Meaning {#meaning}\nThe wildcard member branch accepts a JSON object; its non-object structural mismatch can be ignored when `jspIgnoreStructuralErrors` is true, and an array may be auto-unwrapped in lax mode. `.keyvalue()` may likewise auto-unwrap an array before it requires an object container, but its direct non-object guard uses `RETURN_ERROR`: throwing versus returning `jperError` follows `jspThrowErrors`, as selected by the caller's silent or ON ERROR handling. Lax mode itself does not suppress this direct `.keyvalue()` guard. Named member access with a missing key is 2203A, while array-only access is 22039.\n\n## Diagnosis {#diagnosis}\nUse the primary to identify the wildcard accessor or item method, then inspect the current item type. Distinguish an object receiver that lacks a named key from a scalar/array receiver that cannot support object expansion. Check lax auto-unwrap and structural-error handling before treating the result as a missing item.\n\n## Response {#response}\nSelect an object, normalize the input shape, or branch before applying the object-only operation. For wildcard access, use lax structural suppression only when dropping a non-object branch is intended. For `.keyvalue()`, lax can only unwrap an array first; a remaining non-object follows the direct throw/silent/ON ERROR path, so do not assume lax suppression will ignore it. If an ERROR occurred in an explicit transaction, roll back or roll back to the existing savepoint before retrying; autocommit can retry the corrected action.\n\n## Versions {#versions}\nThe locked catalogue records this condition from 12.0; the fixed object-only accessor and `.keyvalue()` guards are PostgreSQL 18.6. No natural runtime observation is claimed for this page.\n\n## Related {#related}\n[`22039`](/wiki/sqlstate/22039/), [`2203A`](/wiki/sqlstate/2203A/), [`22037`](/wiki/sqlstate/22037/)\n\n## Sources {#sources}\nThe wildcard member guard is [`jsonpath_exec.c#L852-874`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L852), and `.keyvalue()` checks its object container at [`#L2806-2828`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L2806). The shared strict/lax and throw-return macros are [`jsonpath_exec.c#L235-249`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L235). The structured [evidence record](#sources) binds both object-only primaries; no natural runtime was run.\n\n","description":"Source-backed reference for PostgreSQL SQLSTATE 2203C.","is_stale":false,"name":"","sections":[{"anchor":"","heading":"","html":"\u0026lt;h1\u0026gt;2203C\u0026lt;/h1\u0026gt;"},{"anchor":"at-a-glance","heading":"At a glance","html":"\u003cp\u003eAn object-only JSON path accessor or \u003ccode\u003e.keyvalue()\u003c/code\u003e method received a non-object item. Wildcard member access and object key/value expansion use this structural guard.\u003c/p\u003e"},{"anchor":"messages","heading":"Messages","html":"\u003cp\u003eRepresentative primary texts are:\u003c/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGuard\u003c/th\u003e\n\u003cth\u003ePrimary\u003c/th\u003e\n\u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWildcard member accessor receives a non-object\u003c/td\u003e\n\u003ctd\u003e\u003ccode\u003ejsonpath wildcard member accessor can only be applied to an object\u003c/code\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ccode\u003e.keyvalue()\u003c/code\u003e receives a non-object\u003c/td\u003e\n\u003ctd\u003e\u003ccode\u003ejsonpath item method .%s() can only be applied to an object\u003c/code\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"},{"anchor":"meaning","heading":"Meaning","html":"\u003cp\u003eThe wildcard member branch accepts a JSON object; its non-object structural mismatch can be ignored when \u003ccode\u003ejspIgnoreStructuralErrors\u003c/code\u003e is true, and an array may be auto-unwrapped in lax mode. \u003ccode\u003e.keyvalue()\u003c/code\u003e may likewise auto-unwrap an array before it requires an object container, but its direct non-object guard uses \u003ccode\u003eRETURN_ERROR\u003c/code\u003e: throwing versus returning \u003ccode\u003ejperError\u003c/code\u003e follows \u003ccode\u003ejspThrowErrors\u003c/code\u003e, as selected by the caller's silent or ON ERROR handling. Lax mode itself does not suppress this direct \u003ccode\u003e.keyvalue()\u003c/code\u003e guard. Named member access with a missing key is 2203A, while array-only access is 22039.\u003c/p\u003e"},{"anchor":"diagnosis","heading":"Diagnosis","html":"\u003cp\u003eUse the primary to identify the wildcard accessor or item method, then inspect the current item type. Distinguish an object receiver that lacks a named key from a scalar/array receiver that cannot support object expansion. Check lax auto-unwrap and structural-error handling before treating the result as a missing item.\u003c/p\u003e"},{"anchor":"response","heading":"Response","html":"\u003cp\u003eSelect an object, normalize the input shape, or branch before applying the object-only operation. For wildcard access, use lax structural suppression only when dropping a non-object branch is intended. For \u003ccode\u003e.keyvalue()\u003c/code\u003e, lax can only unwrap an array first; a remaining non-object follows the direct throw/silent/ON ERROR path, so do not assume lax suppression will ignore it. If an ERROR occurred in an explicit transaction, roll back or roll back to the existing savepoint before retrying; autocommit can retry the corrected action.\u003c/p\u003e"},{"anchor":"versions","heading":"Versions","html":"\u003cp\u003eThe locked catalogue records this condition from 12.0; the fixed object-only accessor and \u003ccode\u003e.keyvalue()\u003c/code\u003e guards are PostgreSQL 18.6. No natural runtime observation is claimed for this page.\u003c/p\u003e"},{"anchor":"related","heading":"Related","html":"\u003cp\u003e\u003ca href=\"/wiki/sqlstate/22039/\"\u003e\u003ccode\u003e22039\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sqlstate/2203A/\"\u003e\u003ccode\u003e2203A\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sqlstate/22037/\"\u003e\u003ccode\u003e22037\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e"},{"anchor":"sources","heading":"Sources","html":"\u003cp\u003eThe wildcard member guard is \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L852\"\u003e\u003ccode\u003ejsonpath_exec.c#L852-874\u003c/code\u003e\u003c/a\u003e, and \u003ccode\u003e.keyvalue()\u003c/code\u003e checks its object container at \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L2806\"\u003e\u003ccode\u003e#L2806-2828\u003c/code\u003e\u003c/a\u003e. The shared strict/lax and throw-return macros are \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/adt/jsonpath_exec.c#L235\"\u003e\u003ccode\u003ejsonpath_exec.c#L235-249\u003c/code\u003e\u003c/a\u003e. The structured \u003ca href=\"#sources\"\u003eevidence record\u003c/a\u003e binds both object-only primaries; no natural runtime was run.\u003c/p\u003e"}],"summary":"An object-only JSON path accessor or .keyvalue() method received a non-object item. 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