Question

我有这个sql表

CREATE TABLE Notes(
    NoteID [int] IDENTITY(1,1) NOT NULL,
    NoteTitle [nvarchar](255) NULL,
    NoteDescription [nvarchar](4000) NULL
) CONSTRAINT [PK_Notes] PRIMARY KEY CLUSTERED 
(
    NoteID ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF,
 ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

我想从包含NoteID的临时表中复制记录（使用sql查询）..

这是我的剧本：

SET IDENTITY_INSERT Notes OFF

INSERT INTO Notes (NoteID, NoteTitle,NoteDescription)
SELECT NoteID, NoteTitle,NoteDescription from Notes_Temp

SET IDENTITY_INSERT Notes ON

使用此脚本，我收到错误：

Cannot insert explicit value for identity column in table 'Notes' when IDENTITY_INSERT is set to OFF.

是否有其他方法使用sql查询将记录插入到具有标识列的表中？

Answer 1

改变<和p>周围的OFF和ON

SET IDENTITY_INSERT Notes ON

INSERT INTO Notes (NoteID, NoteTitle,NoteDescription)
SELECT NoteID, NoteTitle,NoteDescription from Notes_Temp

SET IDENTITY_INSERT Notes OFF

Answer 2

SET IDENTITY_INSERT Notes ON

INSERT INTO Notes
/*Note the column list is REQUIRED here, not optional*/
(NoteID, NoteTitle,NoteDescription)
SELECT NoteID, NoteTitle,NoteDescription from Notes_Temp

SET IDENTITY_INSERT Notes OFF

您正在插入作为标识列的NoteId的值。您可以像这样在表格上启用标识插入，以便您可以指定自己的标识值。

Answer 3

据推测，您正在使用SQL Server（您没有说），并且误解了IDENTITY_INSERT的含义和目的。通常，不允许您显式设置IDENTITY列的值，但是通过将表的IDENTITY_INSERT设置为ON，您可以暂时允许此类插入。

使用IDENTITY列将记录INSERT到SQL表

3 个答案: