#777

Rename a column to match the API docs

The frontend team's API docs call the field display_name, but in the database it lives as full_name — the naming mismatch keeps confusing people. Rename the column without recreating the table or losing data. Build clients with id (primary key) and full_name (up to 100 chars), then rename full_name to display_name.

Just CREATE/ALTER/DROP — no trailing SELECT needed.

Your query result will appear here

No starting schema

This task starts with no tables — you'll create them via CREATE TABLE.