{
  "schema": 1,
  "sqlstate": "42P02",
  "condition_name": "undefined_parameter",
  "sources": [
    {
      "id": "src.errcodes.42P02.18.6",
      "kind": "upstream_source",
      "source_role": "condition_definition",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/utils/errcodes.txt",
      "location": "line 375",
      "sha256": "6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L375"
    },
    {
      "id": "src.call.42P02.81f0048a16f439569ce3a4ba",
      "kind": "upstream_source",
      "source_role": "source_call",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/parser/parse_expr.c",
      "location": "lines 899-902",
      "sha256": "63c37770872a08978f931c31f801666a08e3bc8e51c2c65ff60151a1d139d55b",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/parser/parse_expr.c#L899-L902"
    },
    {
      "id": "src.call.42P02.73515542f469d69893fd5fb8",
      "kind": "upstream_source",
      "source_role": "source_call",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/parser/parse_param.c",
      "location": "lines 109-112",
      "sha256": "4aab2ecc770fcda619b26ac12beaf7e527542b56f55eb45879b72e92442e8a28",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/parser/parse_param.c#L109-L112"
    },
    {
      "id": "src.call.42P02.671f865f9d428e0ab2a78347",
      "kind": "upstream_source",
      "source_role": "source_call",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/parser/parse_param.c",
      "location": "lines 203-206",
      "sha256": "4aab2ecc770fcda619b26ac12beaf7e527542b56f55eb45879b72e92442e8a28",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/parser/parse_param.c#L203-L206"
    },
    {
      "id": "src.call.42P02.bind-contract",
      "kind": "upstream_source",
      "source_role": "source_call",
      "tag": "REL_18_6",
      "commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
      "path": "src/backend/tcop/postgres.c",
      "location": "lines 1718-1731",
      "sha256": "9fb62275b1badf94d01ab351337b60410cd9b3ab1fe63fa9f23d6d2185a21061",
      "url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L1718-L1731"
    },
    {
      "id": "src.calls.REL_18_6.42P02",
      "kind": "local_artifact",
      "source_role": "source_call_scan",
      "sha256": "9ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf"
    }
  ],
  "claims": [
    {
      "id": "identity.class-and-condition",
      "statement": "42P02 is the undefined_parameter condition in Class 42.",
      "method": "Read fixed REL_18_6 errcodes.txt and locked facts.",
      "limits": "Identity does not enumerate all source branches or client failures.",
      "sources": [
        "src.errcodes.42P02.18.6"
      ]
    },
    {
      "id": "mechanism.selected-source-path",
      "statement": "Fixed and variable parser parameter hooks report `there is no parameter $%d` with parser position when a marker is outside the known parameter set. The separate extended-query Bind guards report protocol violation 08P01 for parameter format/value counts that do not match the prepared statement, so a Bind count mismatch is not 42P02.",
      "method": "Read complete resolved REL_18_6 report groups and message roles.",
      "limits": "Representative confirmed core paths only; not exhaustive historical or extension coverage.",
      "sources": [
        "src.call.42P02.81f0048a16f439569ce3a4ba",
        "src.call.42P02.73515542f469d69893fd5fb8",
        "src.call.42P02.671f865f9d428e0ab2a78347",
        "src.call.42P02.bind-contract"
      ]
    },
    {
      "id": "versions.catalogue-boundary",
      "statement": "From the locked 7.4 lower bound through 18.6 and 19beta3; this is a catalogue range. The selected parser and Bind branches are fixed 18.6 source paths and no client bind case was run.",
      "method": "Read locked catalogue facts and definition snapshots.",
      "limits": "First observed release is a lower bound, not precise behavioral introduction.",
      "sources": [
        "src.errcodes.42P02.18.6"
      ]
    }
  ],
  "messages": [
    {
      "id": "message.variant-1",
      "sqlstate": "42P02",
      "severity_source": "explicit ERROR",
      "primary_template": "there is no parameter $%d",
      "detail_templates": [],
      "hint_templates": [],
      "roles": [
        {
          "role": "errmsg",
          "template": "there is no parameter $%d"
        }
      ],
      "sources": [
        "src.call.42P02.81f0048a16f439569ce3a4ba"
      ],
      "limits": "Placeholders remain dynamic source fields; no concrete runtime value is claimed."
    },
    {
      "id": "message.variant-2",
      "sqlstate": "42P02",
      "severity_source": "explicit ERROR",
      "primary_template": "there is no parameter $%d",
      "detail_templates": [],
      "hint_templates": [],
      "roles": [
        {
          "role": "errmsg",
          "template": "there is no parameter $%d"
        }
      ],
      "sources": [
        "src.call.42P02.73515542f469d69893fd5fb8"
      ],
      "limits": "Placeholders remain dynamic source fields; no concrete runtime value is claimed."
    },
    {
      "id": "message.variant-3",
      "sqlstate": "42P02",
      "severity_source": "explicit ERROR",
      "primary_template": "there is no parameter $%d",
      "detail_templates": [],
      "hint_templates": [],
      "roles": [
        {
          "role": "errmsg",
          "template": "there is no parameter $%d"
        }
      ],
      "sources": [
        "src.call.42P02.671f865f9d428e0ab2a78347"
      ],
      "limits": "Placeholders remain dynamic source fields; no concrete runtime value is claimed."
    }
  ],
  "usage_evidence": [
    {
      "scope": "SQLSTATE definition and release identity",
      "status": "definition_only",
      "evidence_ids": [
        "identity.class-and-condition",
        "src.errcodes.42P02.18.6"
      ]
    },
    {
      "scope": "Selected PostgreSQL 18.6 source emitters and message roles",
      "status": "source_path_confirmed",
      "evidence_ids": [
        "mechanism.selected-source-path"
      ]
    },
    {
      "scope": "Natural runtime execution for this batch",
      "status": "unknown",
      "evidence_ids": []
    }
  ],
  "runtime": []
}