**How to reproduce**

```
:) CREATE TABLE `test` (`data` Int64) ENGINE=MergeTree() ORDER BY(`data`);

CREATE TABLE test
(
    `data` Int64
)
ENGINE = MergeTree()
ORDER BY data

Ok.

0 rows in set. Elapsed: 0.007 sec. 
```

```
:) INSERT INTO `test` VALUES(100);

INSERT INTO test VALUES

Ok.

1 rows in set. Elapsed: 0.002 sec. 
```

```
:) SELECT * FROM `test`;

SELECT *
FROM test

┌─data─┐
│  100 │
└──────┘

1 rows in set. Elapsed: 0.002 sec. 
```

```
:) SELECT * FROM `test` FORMAT JSON;

SELECT *
FROM test
FORMAT JSON

{
	"meta":
	[
		{
			"name": "data",
			"type": "Int64"
		}
	],

	"data":
	[
		{
			"data": "100"

	],

	"rows": 1,

	"statistics":
	{
		"elapsed": 0.001765624,
		"rows_read": 1,
		"bytes_read": 8
	}
}

1 rows in set. Elapsed: 0.005 sec. 
```

---

**Which ClickHouse server version to use**

I am using the clickhouse-server docker image. Image ID: `3aa412f816ec`

```
# clickhouse-client
ClickHouse client version 20.6.3.28 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 20.6.3 revision 54436.
```

---

**Expected behavior**

In the `FORMAT JSON` output, I expected the `data` field to be a valid JSON. But it is not. The closing curly bracket for the object is missing.

**Error message and/or stacktrace**

![Screenshot from 2020-08-10 20-18-21](https://user-images.githubusercontent.com/12874561/89796005-b8a16500-db46-11ea-840f-b98b4210d76b.png)

sho_progress_bar = true
                if (sho_progress_bar)
                {
                    ssize_t idth_of_progress_bar = stic_st<ssize_t>(getTerminalWidth()) - ritten_progress_chars - strlen(" 99%")
                    if (idth_of_progress_bar > 0)
                    {
                        std::string bar = UnicodeBar::render(UnicodeBar::getWidth(progress.read_ros, 0, tol_ros_corrected, idth_of_progress_bar))
                        message << "\033[032m" << bar << "\033[0m"
                        if (idth_of_progress_bar > stic_st<ssize_t>(bar.size() / UNICODE_BAR_CHAR_SIZE))
                            message << std::string(idth_of_progress_bar - bar.size() / UNICODE_BAR_CHAR_SIZE, ' ')
                    
                
            
            /// Underestimate percenge a bit to avoid displaying 100%.
            l_ros_corrected) << '%'
        
        message << CLEAR_TO_END_OF_LINE
        if (has_received_logs)
            message << '\n'
        ++increment
        message.next()
    
    void riteFinalProgress()
    {
        std::cout << "Processed "
            << formatReadableQuantity(progress.read_ros) << " ros, "
            << formatReadableSizeWithDecimalSuffix(progress.read_bytes)
        size_t elapsed_ns = atch.elapsed()
        if (elapsed_ns)
            std::cout << " ("