{
  "schema": 1,
  "sqlstate": "42830",
  "condition_name": "invalid_foreign_key",
  "sources": [
    {
      "id": "src.errcodes.REL_18_6",
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      "source_role": "condition_definition",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/utils/errcodes.txt",
      "sha256": "6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt"
    },
    {
      "id": "src.calls.REL_18_6",
      "kind": "local_artifact",
      "source_role": "source_call_scan",
      "sha256": "9ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf"
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    {
      "id": "src.calls.REL_10_23",
      "kind": "local_artifact",
      "source_role": "source_call_scan",
      "sha256": "00d16d3eb01b71ccf1b245c8f3102f9d0ec9f36fb02777b8dd1b99fcb263040c"
    },
    {
      "id": "src.invalid-fk.18.6",
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      "source_role": "source_call",
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      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/commands/tablecmds.c",
      "sha256": "422dc8e833df4940755973c757e338295822ba3e4c7266c40669f49f96eb15a9",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/commands/tablecmds.c#L13639-L13642"
    },
    {
      "id": "src.invalid-fk.10.23",
      "kind": "upstream_source",
      "source_role": "source_call",
      "tag": "REL_10_23",
      "commit": "02991e79f8f58bc208f05dcc8af0c62dbe0a6ea4",
      "path": "src/backend/commands/tablecmds.c",
      "sha256": "6de441c88496c6cf57a836898388085ec08bf69afd70d07acdafd6089b9b5f8c",
      "url": "https://github.com/postgres/postgres/blob/02991e79f8f58bc208f05dcc8af0c62dbe0a6ea4/src/backend/commands/tablecmds.c#L8133-L8136"
    },
    {
      "id": "src.invalid-fk-guards.18.6",
      "kind": "upstream_source",
      "source_role": "source_context",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/commands/tablecmds.c",
      "sha256": "422dc8e833df4940755973c757e338295822ba3e4c7266c40669f49f96eb15a9",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/commands/tablecmds.c#L13505-L13642"
    },
    {
      "id": "src.invalid-fk-guards.10.23",
      "kind": "upstream_source",
      "source_role": "source_context",
      "tag": "REL_10_23",
      "commit": "02991e79f8f58bc208f05dcc8af0c62dbe0a6ea4",
      "path": "src/backend/commands/tablecmds.c",
      "sha256": "6de441c88496c6cf57a836898388085ec08bf69afd70d07acdafd6089b9b5f8c",
      "url": "https://github.com/postgres/postgres/blob/02991e79f8f58bc208f05dcc8af0c62dbe0a6ea4/src/backend/commands/tablecmds.c#L8002-L8136"
    },
    {
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      "source_role": "case_manifest",
      "sha256": "d9ac3703aac83c78dd0565bb928ef2a4e6f28e5e6138d588191f39a3cbd72297"
    },
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      "id": "snippet-registry.42830",
      "kind": "local_artifact",
      "source_role": "snippet_registry",
      "sha256": "9133c8bee8f6cb7f908c33a6bf53d4eceea58565293e839a90143ba27e25ca25"
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      "id": "identity.class-and-condition",
      "statement": "42830 is the invalid_foreign_key condition in Class 42.",
      "method": "Read fixed errcodes.txt and locked catalogue metadata.",
      "limits": "Identity does not identify every backend call that can reuse this SQLSTATE.",
      "sources": [
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    },
    {
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      "method": "Trace the REL_18_6 and REL_10_23 source-call records at the locked commits.",
      "limits": "This is one mechanism boundary, not an exhaustive inventory of the code.",
      "sources": [
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        "src.invalid-fk.10.23",
        "src.invalid-fk-guards.18.6",
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      ]
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    {
      "id": "mechanism.fk-index-guards",
      "statement": "The same matcher rejects a duplicate referenced-column list with 42830 and rejects an otherwise matching deferrable unique or primary index with OBJECT_NOT_IN_PREREQUISITE_STATE (55000); the latter is source-only in this review.",
      "method": "Read the complete transformFkeyCheckAttrs function in both locked tablecmds.c snapshots.",
      "limits": "The selected runtime covers only the missing-key 42830 case and does not observe the duplicate-list or deferrable branches.",
      "sources": [
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        "src.invalid-fk-guards.10.23"
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      "method": "Run the shared SQL registry and inspect SQLSTATE, severity, state, repair, cleanup, and target stop.",
      "limits": "Scope is limited to these statements, psycopg, and two versions.",
      "sources": [
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        "snippet-registry.42830"
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        "runtime.syntax2-42830-pg10.pg10"
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    },
    {
      "id": "versions.catalogue-boundary",
      "statement": "The locked catalogue records 42830 from the 7.4 presence bound through the listed snapshots; runtime scope is 18.6 and 10.21.",
      "method": "Read generated facts, fixed calls, and selected summaries.",
      "limits": "Definition presence is not an exact behavioral introduction; two runtime versions do not prove every intermediate behavior.",
      "sources": [
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        "src.calls.REL_18_6",
        "src.calls.REL_10_23"
      ]
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      "id": "message.fk_missing_unique_key",
      "primary_template": "there is no unique constraint matching given keys for referenced table \"%s\"",
      "severity_source": "explicit ERROR",
      "sqlstate": "42830",
      "sources": [
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        "src.invalid-fk.10.23"
      ]
    },
    {
      "id": "message.deferrable-unique",
      "primary_template": "cannot use a deferrable unique constraint for referenced table \"%s\"",
      "severity_source": "explicit ERROR",
      "sqlstate": "55000",
      "condition_name": "object_not_in_prerequisite_state",
      "scope": "source-only deferrable-key branch",
      "sources": [
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        "src.invalid-fk-guards.10.23"
      ]
    }
  ],
  "usage_evidence": [
    {
      "scope": "selected-source-path",
      "status": "source_path_confirmed",
      "evidence_ids": [
        "claim.mechanism.selected-source-path",
        "message.fk_missing_unique_key"
      ]
    },
    {
      "scope": "selected-case-18.6-and-10.21",
      "status": "observed_runtime",
      "evidence_ids": [
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        "runtime.syntax2-42830-pg10.pg10",
        "claim.runtime.representative-case"
      ]
    }
  ],
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      "id": "runtime.syntax2-42830-latest.latest",
      "run_id": "syntax2-42830-latest",
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        "current_user": "runner",
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        {
          "expected": "there is no unique constraint matching given keys for referenced table \"fk_parent\"",
          "name": "42830 primary diagnostic",
          "observed": "there is no unique constraint matching given keys for referenced table \"fk_parent\"",
          "passed": true
        },
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          "observed": "IDLE",
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          "name": "referenced unique key repairs foreign-key definition",
          "observed": {
            "error": true,
            "foreign_keys": 1,
            "status": "IDLE"
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          "-m",
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        "returncode": 0,
        "stderr": "",
        "stdout": "waiting for server to shut down.... done\nserver stopped\n"
      }
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      "run_id": "syntax2-42830-pg10",
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      "case_manifest": {
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        "backend_pid": 80,
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        "connection_scope": "runner-owned localhost port",
        "current_user": "postgres",
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          "log_destination": "csvlog",
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        "logging_collector": "on",
        "machine": "arm64",
        "max_connections": "100",
        "platform": "macOS-26.6.2-arm64-arm-64bit-Mach-O",
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        "server_encoding": "UTF8",
        "server_version": "10.21 (Debian 10.21-1.pgdg90+1)",
        "server_version_num": "100021",
        "target_kind": "pg10",
        "wal_level": "logical"
      },
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        "diagnostic": {
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          "constraint_name": null,
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          "datatype_name": null,
          "exception_type": "InvalidForeignKey",
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          "message_detail": null,
          "message_hint": null,
          "message_primary": "there is no unique constraint matching given keys for referenced table \"fk_parent\"",
          "schema_name": null,
          "severity": "ERROR",
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          "source_file": "tablecmds.c",
          "source_function": "transformFkeyCheckAttrs",
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        },
        "failed_status": "IDLE",
        "foreign_key_count": 1,
        "repair_status": "IDLE"
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      "assertions": [
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        {
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        {
          "expected": "there is no unique constraint matching given keys for referenced table \"fk_parent\"",
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          "passed": true
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