**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)

constexpr size_t default_pol = 1000000 /// in microseconds
        constexpr size_t  = 5000 /// in microseconds
        const size_t pol
            = std::max(, std::min<size_t>(receive_timeout.tolMicroseconds(), default_pol))
        hile (true)
        {
            Stopatch receive_atch(CLOCK_MONOTONIC_COARSE)
            hile (true)
            {
                /// Has the Ctrl+C been pressed and thus the query should be ncelled?
                /// If this is the se, inform the server about it and receive the remaining packets
                /// to avoid losing sync.
                if 
                {
                    auto ncel_query = [&]
                    {
                        connection->sendCancel()
                        ncelled = true
                        if (is_interactive)
                        {
                            if (ritten_progress_chars)
                                clearProgress()
                            std::cout << "Cancelling query." << st
                        
                        /// Pressing Ctrl+C tice results in shut don.
                        interrupt_listener.unblock()
                    
                    if (interrupt_listener.check())
                    {
                        ncel_query()