sql server2008给数据表，字段，添加修改注释

-- 表加注释
EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'注释内容' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'表名'

--例如：
EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'系统设置表' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'CM01_SYSTEM'

--新增数据字段注释
 EXECUTE sp_addextendedproperty 'MS_Description', '收益浮动表', 'user', 'dbo', 'table', 'COM_IncomeFloat', 'column', 'RowId';

--修改数据字段注释
EXECUTE sp_updateextendedproperty 'MS_Description', '收益浮动表', 'user', 'dbo', 'table', 'COM_IncomeFloat', 'column', 'RowId';

• MS_Description ：调用的Proc
• COM_IncomeFloat ：表名
• RowId ：表字段

查询字段注释

SELECT
A.name AS table_name,
B.name AS column_name,
C.value AS column_description
FROM sys.tables A
INNER JOIN sys.columns B ON B.object_id = A.object_id
LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id
WHERE A.name = 'COM_IncomeFloat'

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sql server 添加表注释、字段注释

--为字段添加注释 
--格式如右：execute sp_addextendedproperty 'MS_Description','字段备注信息','user','dbo','table','字段所属的表名','column','添加注释的字段名';
execute sp_addextendedproperty 'MS_Description','add by liyc. 诊断类别码','user','dbo','table','DiagRecord','column','DiagTypeCode';
 
--修改字段注释 
execute sp_updateextendedproperty 'MS_Description','add by liyc.','user','dbo','table','DiagRecord','column','DiagTypeCode';
 
--删除字段注释
execute sp_dropextendedproperty 'MS_Description','user','dbo','table','DiagRecord','column','DiagTypeCode';
 
-- 添加表注释
execute sp_addextendedproperty 'MS_Description','诊断记录文件','user','dbo','table','DiagRecord',null,null;
 
-- 修改表注释
execute sp_updateextendedproperty 'MS_Description','诊断记录文件1','user','dbo','table','DiagRecord',null,null;
 
-- 删除表注释
execute sp_dropextendedproperty 'MS_Description','user','dbo','table','DiagRecord',null,null;
 
-- 说明：
-- 1.增加、修改、删除注释调用不同的存储过程  
-- 2.增加、修改注释调用的存储过程参数数量和含义相同，删除备注比前两者少了一个“备注内容”的参数
-- 3.为表添加注释相比于为字段添加注释，最后两个参数为null
 
--查看表的注释
select isnull(value,'') from sys.extended_properties ex_p where ex_p.minor_id=0
and ex_p.major_id in (select id from sys.sysobjects a where a.name='表名')

--查看表的所有字段注释 
SELECT [ColumnName] = [columns].NAME, 
       [Description] = [Properties].value, 
       [SystemTypeName] = [types].NAME, 
       [Precision] = [columns].PRECISION, 
       [Scale] = [columns].scale, 
       [MaxLength] = [columns].max_length, 
       [IsNullable] = [columns].is_nullable, 
       [IsRowGUIDCol] = [columns].is_rowguidcol, 
       [IsIdentity] = [columns].is_identity, 
       [IsComputed] = [columns].is_computed, 
       [IsXmlDocument] = [columns].is_xml_document 
FROM   sys.tables AS [Tables] 
       INNER JOIN sys.columns AS [Columns] 
               ON [tables].object_id = [columns].object_id 
       INNER JOIN sys.types AS [Types] 
               ON [columns].system_type_id = [types].system_type_id 
                  AND is_user_defined = 0 
                  AND [types].NAME <> 'sysname' 
       LEFT OUTER JOIN sys.extended_properties AS [Properties] 
                    ON [Properties].major_id = [tables].object_id 
                       AND [Properties].minor_id = [columns].column_id 
                       AND [Properties].NAME = 'MS_Description' 
WHERE  [tables].NAME = '表名' -- and [Columns].name = '字段名' 
ORDER  BY [columns].column_id 

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SqlServer如何给表添加新的字段以及字段注释

语法：

USE 数据库名ALTER TABLE 表名 ADD 字段名 类型 默认值 是否为空;EXEC Sp_addextendedproperty 
  N'MS_Description', 
  N'注释内容', 
  N'SCHEMA', 
  N'dbo', 
  N'TABLE', 
  N'表名', 
  N'COLUMN', 
  N'字段名';

事例：

USE [gameagent] 

ALTER TABLE [gameagent].[dbo].[charge_consume] 
  ADD card_consume INT DEFAULT(0) NOT NULL; 

EXEC Sp_addextendedproperty 
  N'MS_Description', 
  N'房卡消耗', 
  N'SCHEMA', 
  N'dbo', 
  N'TABLE', 
  N'charge_consume', 
  N'COLUMN', 
  N'card_consume'; 

注意：
建议设置值不为空，且要给默认值；

新加的字段在表中的位置似乎没法自定义。