Add Column

Cancel

Current Schema

CREATE TABLE textbook_units  (
  id          INTEGER PRIMARY KEY AUTOINCREMENT,
  version_id  TEXT NOT NULL REFERENCES textbook_versions(id),
  unit_order  INTEGER NOT NULL,
  -- 单元序号
    title       TEXT NOT NULL,
  -- 单元标题
    unit_type   TEXT DEFAULT 'regular',
  -- regular/识字/拼音/习作/综合
    created_at  DATETIME DEFAULT (datetime('now'))
)