当试图从NVARCHAR(最大值)更改列VARCHAR(最大值)我收到提示:更改NVARCHAR到VARCHAR列数据类型
Cannot create a row of size 8063 which is greater than the allowable maximum row size of 8060.
这是因为存储Unicode字符需要不同的存储正确。但是有没有办法强制SQL Server进行这种转换?
编辑:表定义和修改命令:
CREATE TABLE [Descriptions](
[SerialNo] [varchar](20) NOT NULL,
[LanguageCode] [char](2) NOT NULL,
[Note] [nvarchar](max) NOT NULL,
[Address] [varchar](2000) NOT NULL,
[StoreId] [varchar](3) NULL,
CONSTRAINT [UK_Descriptions] UNIQUE NONCLUSTERED
(
[SerialNo] ASC,
[LanguageCode] ASC,
[StoreId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
-- Alter column:
ALTER TABLE [Descriptions] ALTER COLUMN [Note] varchar(max) NOT null;
'nvarchar(max)'和'varchar(max)'可以存储在页外,所以它们只贡献一个指向行大小限制的指针。这里肯定还有别的事情发生,你可以发布表格定义吗? – Andomar 2014-08-28 09:55:12
[SQL Server 2012中的最大行大小与varchar(max)字段]的可能重复(http://stackoverflow.com/questions/19251004/max-row-size-in-sql-server-2012-with-varcharmax-字段) – Tanner 2014-08-28 10:00:59
或:http://stackoverflow.com/questions/3905934 – Tanner 2014-08-28 10:02:25