alter view

the following valid sql statement doesn't work:

```
alter view someview as select b, c from sometable;
```

I get this error:

```
ound error: sql parser error: Expected TABLE, found: view
```

Start by reproducing the reported ALTER VIEW statement and tracing where ALTER statements are parsed, using the parser error as the entry point. Add coverage for this valid statement and confirm that it parses successfully without regressing existing ALTER TABLE handling.

Written by the indexing model from the issue text.