**Describe the issue**
```
SELECT xyz

Query id: 0c7d8017-4686-404c-9991-388d9a693e5f


0 rows in set. Elapsed: 0.003 sec. 

Received exception from server (version 21.2.1):
Code: 47. DB::Exception: Received from localhost:9000. DB::Exception: Missing columns: 'xyz' while processing query: 'SELECT xyz', required columns: 'xyz', maybe you meant: .
```

The fragment `maybe you meant: .` should not be present.
{
    ASTs & elements = select_query->select()->children;
    std::map<String, size_t> required_columns_with_duplicate_count;
    if (!required_result_columns.empty())
    {
        
        for (const auto & name : required_result_columns)
        {
            if (remove_dups)
                required_columns_with_duplicate_count[name] = 1;
            else
                ++required_columns_with_duplicate_count[name];
        }
    }
    else if (remove_dups)
    {
        
        for (const auto & elem : elements)
            required_columns_with_duplicate_count.emplace(elem->getAliasOrColumnName(), 1);
    }
    else
        return;