Error

Error is raised when a SQLite operation fails for any reason other than a busy/locked condition. Busy is a subtype of Error, so catching Error handles all SQLite errors.

open "mydb.sqlite" do |conn|
  do
    conn.execute "INSERT INTO users (name) VALUES (:name)" name: "Alice"
  catch Busy
    echo "Database is busy"
  catch Error: e
    echo "SQLite error: $e"