{"id":"2016675c29a44d4f","repo":"jackc/pgx","slug":"unknown-format-code-d-201667","errorCode":null,"errorMessage":"unknown format code %d","messagePattern":"unknown format code (.+?)","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pgtype/composite.go","lineNumber":221,"sourceCode":"\t}\n\n\treturn nil\n}\n\nfunc (c *CompositeCodec) DecodeDatabaseSQLValue(m *Map, oid uint32, format int16, src []byte) (driver.Value, error) {\n\tif src == nil {\n\t\treturn nil, nil\n\t}\n\n\tswitch format {\n\tcase TextFormatCode:\n\t\treturn string(src), nil\n\tcase BinaryFormatCode:\n\t\tbuf := make([]byte, len(src))\n\t\tcopy(buf, src)\n\t\treturn buf, nil\n\tdefault:\n\t\treturn nil, fmt.Errorf(\"unknown format code %d\", format)\n\t}\n}\n\nfunc (c *CompositeCodec) DecodeValue(m *Map, oid uint32, format int16, src []byte) (any, error) {\n\tif src == nil {\n\t\treturn nil, nil\n\t}\n\n\tswitch format {\n\tcase TextFormatCode:\n\t\tscanner := NewCompositeTextScanner(m, src)\n\t\tvalues := make(map[string]any, len(c.Fields))\n\t\tfor i := 0; scanner.Next() && i < len(c.Fields); i++ {\n\t\t\tvar v any\n\t\t\tfieldPlan := m.PlanScan(c.Fields[i].Type.OID, TextFormatCode, &v)\n\t\t\tif fieldPlan == nil {\n\t\t\t\treturn nil, fmt.Errorf(\"unable to scan OID %d in text format into %v\", c.Fields[i].Type.OID, v)\n\t\t\t}","sourceCodeStart":203,"sourceCodeEnd":239,"githubUrl":"https://github.com/jackc/pgx/blob/ec1a0befd22592cffffdeeb0a50311b506372f4c/pgtype/composite.go#L203-L239","documentation":"Error \"unknown format code %d\" thrown in jackc/pgx.","triggerScenarios":"Thrown at pgtype/composite.go:221 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}