```
/4/ :) SELECT arrayJoin([1, 2])  GROUP BY 1 WITH TOTALS FORMAT JSON

{
	"meta":
	[
		{
			"name": "arrayJoin([1, 2])",
			"type": "UInt8"
		}
	],

	"data":
	[
		{
			"arrayJoin([1, 2])": 1
		},
		{
			"arrayJoin([1, 2])": 2
		}← Progress: 0.00 rows, 0.00 B (0.00 rows/s., 0.00 B/s.) Logical error: 'Got 2 in totals chunk, expected 1'.
clickhouse-client: /home/akuzm/ch4/ch/src/Common/Exception.cpp:45: DB::Exception::Exception(const std::string &, int): Assertion `false' failed.
Aborted (core dumped)
```


{
    switch (col_format)
    {
        case ColumnFormat::Escaped:
            type.serializeAsTextEscaped(column, row_num, out, settings);
            break;
        case ColumnFormat::Quoted:
            type.serializeAsTextQuoted(column, row_num, out, settings);
            break;
        case ColumnFormat::Csv:
            type.serializeAsTextCSV(column, row_num, out, settings);
            break;
        case ColumnFormat::Json:
            type.serializeAsTextJSON(column, row_num, out, settings);
            break;
        case ColumnFormat::Xml:
            type.serializeAsTextXML(column, row_num, out, settings);
            break;
        case ColumnFormat::Raw:
            type.serializeAsText(column, row_num, out, settings);
            break;
        default:
            __builtin_unreachable();
    }
}
template <typename U, typename V> void TemplateBlockOutputFormat::writeValue(U value, ColumnFormat col_format)