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By default, if you do not specify ON EXISTING, attempting to insert rows into a table where the row already exist results in a duplicate key value error. 缺省情况下,如果您不指定ON EXISTING,则在尝试向表中插入行时,如果相应的行已存在,则会造成重复键值错误。
If duplicate key values exist, the CREATE INDEX statement is canceled and an error is returned. 如果存在重复的键值,则将取消CREATE INDEX语句并返回错误。
Creating a unique index guarantees that any attempt to duplicate key values fails. 创建唯一索引可以确保任何生成重复键值的尝试都会失败。
When set to ON, only the rows that contain duplicate key values are rejected; the nonduplicate key values are added. 当设置为ON时,只有包含重复键值的行被拒绝后,才能添加非重复键值。
A unique index, UNIQUE constraint, or PRIMARY KEY constraint cannot be created if duplicate key values exist in the data. 如果数据中存在重复的键值,则不能创建唯一索引、UNIQUE约束或PRIMARY KEY约束。
This option specifies the error response to duplicate key values in a multiple-row INSERT statement after the index has been created. 当索引创建后,此选项指定对操作多行的INSERT语句中所出现的重复键值错误的响应方式。
The system checks for duplicate key values when the index is created and checks each time data is added with an INSERT or UPDATE statement. 系统会在创建索引后检查是否存在重复的键值,并在每次使用INSERT或UPDATE语句添加数据后进行检查。
Specifies the error response to duplicate key values in a multiple-row insert operation on a unique clustered or unique nonclustered index. 指定对唯一聚集索引或唯一非聚集索引执行多行插入操作时出现重复键值的错误响应。
Specifies the error response to duplicate key values in a multiple-row insert transaction on a unique clustered or unique nonclustered index. 指定对唯一聚集索引或唯一非聚集索引的多行插入事务中重复键值时的错误响应。
He gave me a duplicate key of his house. 他给了我另配了一套他房子的钥匙。
We'll have a duplicate key cut(= made). 我们要配一把钥匙。
May I borrow a duplicate key, please? 请把备用钥匙借给我好吗?
We have a duplicate key to the front door. 我们有前门的备用钥匙。
May I borrow a duplicate key for room 510? 我可以借用510室的钥匙吗?
He opened the door with a duplicate key . 他用一把复制的钥匙打开了门。
He opened the door with a duplicate key. 他用一把复制的钥匙打开了门。
The primary key value can't be edited in the form. 无法在表单中编辑主键值。
Key value of Beijing CAU CORN STD. 中农大康的核心价值在哪儿?
This is not an actual key value. 这不是实际的项值。
We have duplicate keys for the front door. 我们有几把相同的前门的钥匙。