Everything runs in your browser's wasm sandbox — the database is created fresh on page load and
disappears on reload; nothing is written to disk. Each run below becomes its own block, like a
notebook cell, so earlier results stay on screen. Click any past command to load it back into the
prompt. In the prompt: Enter runs once the statement ends with ; (otherwise it
just starts a new line, so multi-line statements keep typing), Shift+Enter always inserts a
newline, ⌘/Ctrl+Enter always runs regardless, and ↑/↓ at the start/end of the text
recalls command history (persisted across reloads, though the database itself is not). Type
!help and run it to see every supported command and SQL statement.