英语闪卡

-- 英语闪卡 · Supabase 建表脚本（只需运行一次） CREATE TABLE IF NOT EXISTS flashcard_snapshots ( user_id uuid PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE, snapshot jsonb NOT NULL, updated_at timestamptz NOT NULL DEFAULT now() ); CREATE OR REPLACE FUNCTION flashcards_set_updated_at() RETURNS TRIGGER AS $$ BEGIN NEW.updated_at = now(); RETURN NEW; END; $$ LANGUAGE plpgsql; DROP TRIGGER IF EXISTS flashcards_updated_at ON flashcard_snapshots; CREATE TRIGGER flashcards_updated_at BEFORE UPDATE ON flashcard_snapshots FOR EACH ROW EXECUTE FUNCTION flashcards_set_updated_at(); ALTER TABLE flashcard_snapshots ENABLE ROW LEVEL SECURITY; DROP POLICY IF EXISTS "用户只能读写自己的快照" ON flashcard_snapshots; CREATE POLICY "用户只能读写自己的快照" ON flashcard_snapshots FOR ALL USING (auth.uid() = user_id) WITH CHECK (auth.uid() = user_id);