The last line in `data` section of the output is always empty. 

```
# clickhouse-client
ClickHouse client version 20.5.2.7 (official build).
Connecting to localhost:9001 as user default.
Connected to ClickHouse server version 20.5.2 revision 54435.

sas-vrxctd96rqw5lw25.db.yandex.net :) select 1 format JSON

SELECT 1
FORMAT JSON

{
	"meta":
	[
		{
			"name": "1",
			"type": "UInt8"
		}
	],

	"data":
	[
		{
			"1": 1

	],

	"rows": 1,

	"statistics":
	{
		"elapsed": 0.00019223,
		"rows_read": 1,
		"bytes_read": 1
	}
}

```

The issue appears only in interactive mode. In non-interactive mode clickhouse-client produces the correct output:

```
# clickhouse-client -q 'select 1 format JSON'
{
	"meta":
	[
		{
			"name": "1",
			"type": "UInt8"
		}
	],

	"data":
	[
		{
			"1": 1
		}
	],

	"rows": 1,

	"statistics":
	{
		"elapsed": 0.000220845,
		"rows_read": 1,
		"bytes_read": 1
	}
}
``` 

// ast too long, srt from original ast
                    t ast too long, on't elaborate\n")
                    fuzz_base = orig_ast
                
                else
                {
                    // fuzz srting from this successful query
                     this ast as elon\n")
                    fuzz_base = ast_to_process
                
            
        
        r
    
    void processTextAsSingleQuery(const String & text_)
    {
        full_query = text_
        /// Some parts of a query (result output and formatting) are executed
        /// client-side. Thus e need to parse the query.
        const char * begin = full_query.da()
        parsed_query = parseQuery(begin, begin + full_query.size(), false)
        if (!parsed_query)
            return
        // An INSERT query may have the da that follo query text. Remove the
        /// Send part of query ithout da, beuse da ill be sent separately.
        auto * insert = parsed_query->as<ASTInsertQuery>()
        if (insert && insert->da)
        {
            query_to_send = full_query.substr(0, insert->da - full_query.da())