identity column 中文意思是什麼
identity column
解釋
標識列-
Is an identity column. for more information, see
是標識列時,才可以指定此子句。 -
Only one identity column can be created per table
每個表只能創建一個標識列。 -
D. inserting data into a table with an identity column
D .將數據插入到帶有標識列的表 -
Support for insertions into an identity column
允許將值插入到identity列。 -
If the modified column is an identity column,
如果修改後的列是標識列,則 -
Indicates that the new column is an identity column
指示新列是標識列。 -
Specifies that the new column is an identity column
指定新列為標識列。 -
Is the name of a table with an identity column
包含標識列的表的名稱。 -
The identity column is part of an expression
標識列是表達式的一部分。 -
If the column is an identity column ; otherwise
如果此列為標識列,則為 -
If an identifier column exists for a table that has frequent deletions, gaps can occur between identity values
如果在經常進行刪除操作的表中存在標識符列,那麼標識值之間可能會出現斷缺。 -
Set if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identity the row
如果列包含無法寫入的不變的行標識符,並且除了標識行外沒有其他有意義的值,則設置該值。 -
The provider sets dbcolumnflags isrowid if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identity the row
如果列包含不能寫入的持久性行標識符,並且該標識符除了標識行以外沒有其他有意義的值,則提供程序設置dbcolumnflags _ isrowid 。 -
Although the identity property automates row numbering within one table, separate tables, each with its own identifier column, can generate the same values
盡管identity屬性在一個表內自動進行行編號,但具有各自標識符列的各個表可以生成相同的值。 -
For example, if all records in the database have been deleted, compacting the database sets the value of the identity column of the next record to the seed value
例如,如果數據庫中的所有記錄均已被刪除,對數據庫進行壓縮便會將下一條記錄的標識列的值設為種子值。 -
Each row in the table has new incremental values in the identity column
表中的每一行在標識列中都有新的增量值。 -
Integer column to specify as an identity column ; and then, in the column properties panel for the column, double - click the
(整數)列;然後在該列的「列屬性」面板中,雙擊該列的「標識規范」區域並將「 (是標識) 」設置為「是」 。 -
Allows explicit values to be inserted into the identity column of a table
允許將顯式值插入表的標識列中。 -
Bound defaults and default constraints cannot be used with an identity column
不能對標識列使用綁定默認值和default約束。 -
Because sql server does not support pseudo columns for identifiers, updates that have to use the auto - generated key feature must operate against a table that contains an identity column
由於sql server不支持標識符的偽列,因此必須使用自動生成鍵功能的更新必須對包含identity列的表進行操作。
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