{"record":{"id":"fb418d91ec4adff7","repo":"jackc/pgx","slug":"cannot-scan-null-into-uint32","errorCode":null,"errorMessage":"cannot scan NULL into *uint32","messagePattern":"cannot scan NULL into \\*uint32","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pgtype/builtin_wrappers.go","lineNumber":183,"sourceCode":"\tif v.Int64 > math.MaxUint16 {\n\t\treturn fmt.Errorf(\"%d is greater than maximum value for uint16\", v.Int64)\n\t}\n\t*w = uint16Wrapper(v.Int64)\n\n\treturn nil\n}\n\nfunc (w uint16Wrapper) Int64Value() (Int8, error) {\n\treturn Int8{Int64: int64(w), Valid: true}, nil\n}\n\ntype uint32Wrapper uint32\n\nfunc (w uint32Wrapper) SkipUnderlyingTypePlan() {}\n\nfunc (w *uint32Wrapper) ScanInt64(v Int8) error {\n\tif !v.Valid {\n\t\treturn fmt.Errorf(\"cannot scan NULL into *uint32\")\n\t}\n\n\tif v.Int64 < 0 {\n\t\treturn fmt.Errorf(\"%d is less than minimum value for uint32\", v.Int64)\n\t}\n\tif v.Int64 > math.MaxUint32 {\n\t\treturn fmt.Errorf(\"%d is greater than maximum value for uint32\", v.Int64)\n\t}\n\t*w = uint32Wrapper(v.Int64)\n\n\treturn nil\n}\n\nfunc (w uint32Wrapper) Int64Value() (Int8, error) {\n\treturn Int8{Int64: int64(w), Valid: true}, nil\n}\n\ntype uint64Wrapper uint64","sourceCodeStart":165,"sourceCodeEnd":201,"githubUrl":"https://github.com/jackc/pgx/blob/ec1a0befd22592cffffdeeb0a50311b506372f4c/pgtype/builtin_wrappers.go#L165-L201","documentation":"uint32Wrapper.ScanInt64 received an invalid (NULL) Int8 while the destination is a plain Go uint32, which cannot represent NULL.","triggerScenarios":"Thrown at pgtype/builtin_wrappers.go:183 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Scan into *uint32 or a nullable type (pgtype.Uint32)","Filter NULLs in the query"],"exampleFix":null,"handlingStrategy":"type-guard","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"ec1a0befd22592cffffdeeb0a50311b506372f4c","analyzedAt":"2026-08-04T22:52:11.263Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}