[Bug] Table creation failed via cursor.execute func

An error occurred when I want to create a table via `cursor.execute` function.

You can reproduce as below:

```python
conn.create_database("tf_demo")
conn.switch_database("tf_demo")
print(conn.list_database())

cursor.execute(f"CREATE TABLE [IF NOT EXISTS] sunspot (date STRING, mssn DOUBLE,);")
```

```shell
ERROR:root:Invalid syntax or Object not exists, get ERROR from database : HTTP Error 422: Unprocessable Entity
[{'Database': 'public'}, {'Database': 'tf_demo'}]

```