code: func (db *baseDB) CreateTable(model interface{}, opt *orm.CreateTableOptions) error {
  	return orm.CreateTable(db.db, model, opt)
  }
docs: // CreateTable creates table for the model. It recognizes following field tags:
  //   - notnull - sets NOT NULL constraint.
  //   - unique - sets UNIQUE constraint.
  //   - default:value - sets default value.