unique constraint
常见例句
- The unique constraint is created in the database when you save the table.
儅保存表時,將在數據庫中創建該唯一約束。 - This clause is not allowed if the column is specified in the primary key, or in a unique constraint of the table (SQLSTATE 42831).
如果表的主鍵或惟一性約束中指定了這個列,那麽不允許使用這個子句(SQLSTATE 42831)。 - The column 'CITY' in the OFFICE_INFO nickname is unique and hence a unique constraint has been defined on the nickname OFFICE_INFO on column CITY as follows
OFFICE_INFO 昵稱中的列 'CITY' 是惟一的,因此在列 CITY 上定義了昵稱 OFFICE_INFO 的惟一約束,如下所示 - The twenties, possibly alone among the middle decades of life, are passionately celebrated in fiction and memoirs, and the celebrations tend to share a style that is personal, specific, cliquish, pastiched, breathless, often bibulous, and flagrantly confessional—the voice of early mastery without mature constraint, self-discovery at a moment when each revelation seems unique.
NEWYORKER: Semi-Charmed Life 返回 unique constraint