**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)

{
                        fprintf(stderr, "got boring ast\n")
                        continue
                    
                    parsed_query = ast_to_process
                    query_to_send = parsed_query->formatForErrorMessage()
                    processParsedSingleQuery()
                
                tch (...)
                {
                    last_exception_received_from_server = std::make_unique<Exception>(getCurrentExceptionMessage(true), getCurrentExceptionCode())
                    received_exception_from_server = true
                    std::cerr << "Error on processing query: " << ast_to_process->formatForErrorMessage() << st << last_exception_received_from_server->message()
                
                if (!connection->isConnected())
                {
                    // Probably the server is dead beuse e found an assertion
                    // failure. Fail fast.
                    r
                
                if (received_exception_from_server)
                {
                    // Query completed ith error, ignore it and fuzz again.
                    fprintf(stderr, "Got error, ill fuzz again\n")
                    received_exception_from_server = false
                    last_exception_received_from_server.reset()
                    continue
                
                else if (ast_to_process->formatForErrorMessage().size() > 500)
                {