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IdentitySeed Property

  • 發行項

未來的 Microsoft SQL Server 發行版本將不再提供此功能。請避免在新的開發工作中使用此功能，並計劃修改目前使用此功能的應用程式。

The IdentitySeed property exposes the initial row value for an identity column.

語法

object
.IdentitySeed [=value]

Parts

  • object
    An expression that evaluates to an object in the Applies To list
  • value
    A long integer greater than or equal to 1

Data Type

Long

Modifiable

Read/write prior to Microsoft SQL Server column creation. Read-only for existing columns.

Prototype (C/C++)

HRESULT GetIdentitySeed(LPLONG pRetVal);
HRESULT SetIdentitySeed(LONG NewValue);

備註

SQL Server allows the row identity property on a single column within a table. Identity, like a primary key, identifies a row uniquely. SQL Server implements row identification using a numeric value. As rows are inserted, SQL Server generates the row value for an identity column by adding an increment to the existing maximum value.

For example, the identity values for the first three rows inserted into a table containing a column defined with identity, an identity seed of 1, and an increment value of 3, are 1, 4, and 7.

Applies To:

Column Object