{"id":"b4b8a2eacb6060aa","repo":"jackc/pgx","slug":"cannot-find-field-s-in-returned-row","errorCode":null,"errorMessage":"cannot find field %s in returned row","messagePattern":"cannot find field (.+?) in returned row","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"rows.go","lineNumber":692,"sourceCode":"\tvar value T\n\terr := (&namedStructRowScanner{ptrToStruct: &value, lax: true}).ScanRow(row)\n\treturn &value, err\n}\n\ntype namedStructRowScanner struct {\n\tptrToStruct any\n\tlax         bool\n}\n\nfunc (rs *namedStructRowScanner) ScanRow(rows CollectableRow) error {\n\ttyp := reflect.TypeOf(rs.ptrToStruct).Elem()\n\tfldDescs := rows.FieldDescriptions()\n\tnamedStructFields, err := lookupNamedStructFields(typ, fldDescs)\n\tif err != nil {\n\t\treturn err\n\t}\n\tif !rs.lax && namedStructFields.missingField != \"\" {\n\t\treturn fmt.Errorf(\"cannot find field %s in returned row\", namedStructFields.missingField)\n\t}\n\tfields := namedStructFields.fields\n\tscanTargets := setupStructScanTargets(rs.ptrToStruct, fields)\n\treturn rows.Scan(scanTargets...)\n}\n\n// Map from namedStructFieldMap -> *namedStructFields\nvar namedStructFieldMap sync.Map\n\ntype namedStructFieldsKey struct {\n\tt        reflect.Type\n\tcolNames string\n}\n\ntype namedStructFields struct {\n\tfields []structRowField\n\t// missingField is the first field from the struct without a corresponding row field.\n\t// This is used to construct the correct error message for non-lax queries.","sourceCodeStart":674,"sourceCodeEnd":710,"githubUrl":"https://github.com/jackc/pgx/blob/ec1a0befd22592cffffdeeb0a50311b506372f4c/rows.go#L674-L710","documentation":"Error \"cannot find field %s in returned row\" thrown in jackc/pgx.","triggerScenarios":"Thrown at rows.go:692 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"ec1a0befd22592cffffdeeb0a50311b506372f4c","analyzedAt":"2026-08-04T22:52:11.263Z","schemaVersion":2}