**Use case**

```
Received exception from server (version 21.11.1):
Code: 36. DB::Exception: Received from localhost:9000. DB::Exception: Wrong index name. Cannot find index `test_pentagram` to drop.. (BAD_ARGUMENTS)

github-explorer.ru-central1.internal :) ALTER TABLE hackernews DROP INDEX text_pentagram
```

It did not show me the typo.
{
    if (type == COMMENT_COLUMN || type == COMMENT_TABLE)
    {
        return true;
    }
    else if (type == MODIFY_COLUMN)
    {
        return comment.has_value()
            && codec == nullptr
            && data_type == nullptr
            && default_expression == nullptr
            && ttl == nullptr;
    }
    return false;
}
bool AlterCommand::isTTLAlter(const StorageInMemoryMetadata & metadata) const