[Feature Request]: Alter statement

### Is there an existing issue for the same feature request?

- [X] I have checked the existing issues.

### Is your feature request related to a problem?

_No response_

### Describe the feature you'd like

1. Copy all catalog under table_entry.
2. Add new table entry in front of entrylist
3. Set default value of newly added column.

### Describe implementation you've considered

_No response_

### Documentation, adoption, use case

_No response_

### Additional information

_No response_

The issue mentions catalog data under table_entry, inserting a table entry before entrylist, and setting a default for a new column, but names no files, tests, or entry points. First clarify the intended statement syntax, affected schema, and expected behavior, then locate the catalog and table-entry implementation. Done should include defined behavior and tests covering copying catalog data, insertion order, and default values.

Written by the indexing model from the issue text.