0

我正在尝试将记录从 table1 填充到 table2。table1 有三列，没有主键。Table2 具有三个相同的列，其中一个标识列作为主键。以下是我的查询和定义。但不知何故，我得到了一个错误，无法将值 NULL 插入列 'notes_id'，表 'table1; 列不允许空值。插入失败。该语句已终止。我想念什么？

CREATE TABLE [dbo].[table1](
    [notes_id] [int] NOT NULL,
    [acty_id] [varchar](80) NOT NULL,
    [notes_datetime] [datetime] NOT NULL,
    [notes_data] [nvarchar](max) NULL,
 CONSTRAINT [PK_tblSRMNotes] PRIMARY KEY CLUSTERED 
(
    [notes_id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

CREATE TABLE [dbo].[table2](
    [acty_id] [varchar](80) NOT NULL,
    [notes_datetime] [datetime] NOT NULL,
    [notes_data] [nvarchar](max) NULL
) ON [PRIMARY]

insert into table1(acty_id, notes_datetime, notes_data)
    select s.acty_id, s.notes_datetime, s.notes_data
    from table2 s
4

1 回答 1

2

您已将第一列设置为 NOT NULL，并将其声明为 PRIMARY KEY，但您尚未说明应如何填充它。通常这是通过 IDENTITY 列：

CREATE TABLE [dbo].[table1]
(
    [notes_id] [int] IDENTITY(1,1) NOT NULL,
---------------------^^^^^^^^^^^^^
    [acty_id] [varchar](80) NOT NULL,
    [notes_datetime] [datetime] NOT NULL,
    [notes_data] [nvarchar](max) NULL,
    CONSTRAINT [PK_tblSRMNotes] PRIMARY KEY CLUSTERED (notes_id)
);
于 2012-08-23T21:12:44.733 回答