{"_yql_row_spec"={
	"Type"=["StructType";[
		["i8";["DataType";"Int8"]];
		["i16";["DataType";"Int16"]];
		["i32";["DataType";"Int32"]];
		["i64";["DataType";"Int64"]];

		["i8opt";["OptionalType"; ["DataType";"Int8"]]];
		["i16opt";["OptionalType"; ["DataType";"Int16"]]];
		["i32opt";["OptionalType"; ["DataType";"Int32"]]];
		["i64opt";["OptionalType"; ["DataType";"Int64"]]];

                ["ui8";["DataType";"Uint8"]];
                ["ui16";["DataType";"Uint16"]];
                ["ui32";["DataType";"Uint32"]];
                ["ui64";["DataType";"Uint64"]];

                ["ui8opt";["OptionalType"; ["DataType";"Uint8"]]];
                ["ui16opt";["OptionalType"; ["DataType";"Uint16"]]];
                ["ui32opt";["OptionalType"; ["DataType";"Uint32"]]];
                ["ui64opt";["OptionalType"; ["DataType";"Uint64"]]];
	]];
}}