unique constraint
基本解释
- 唯一约束
英汉例句
- The unique constraint is created in the database when you save the table.
当保存表时,将在数据库中创建该唯一约束。 - This clause is not allowed if the column is specified in the primary key, or in a unique constraint of the table (SQLSTATE 42831).
如果表的主键或惟一性约束中指定了这个列,那么不允许使用这个子句(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 昵称中的列 'CITY' 是惟一的,因此在列 CITY 上定义了昵称 OFFICE_INFO 的惟一约束,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
双语例句
权威例句
词组短语
- Unique Constraint Properties 唯一约束属性
- Unique Constraint on Knowledge 无重复知识点
- unique constraint definition 唯一性约束定义
短语
专业释义
- 唯一约束
- 唯一的条件约束