SQL Server 注释方法

eddik

参考:http://bbs.csdn.net/topics/240023752


SQL Server 添加注释的例子
　　

CREATE TABLE [dbo].[T_CollegeInfo](
[Id] [int] IDENTITY(1,1) NOT NULL,
[CollegeName] [nvarchar](1000) COLLATE Chinese_PRC_CI_AS NULL,
[HeadPhotoUrl] [varchar](200) COLLATE Chinese_PRC_CI_AS NULL,
[OrderBy] [int] NULL,
[IsIndexShow] [char](1) COLLATE Chinese_PRC_CI_AS NULL,
[IndexOrderBy] [int] NULL,
[UseFlag] [char](1) COLLATE Chinese_PRC_CI_AS NULL,
[AddTime] [datetime] NULL,
[AddUserId] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
CONSTRAINT [PK__T_CollegeInfo__4222D4EF] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
-- 为表添加注释
EXECUTE sp_addextendedproperty N'MS_Description', '学校信息表', N'user', dbo, N'table', T_CollegeInfo, NULL, NULL
GO
-- 为表中各列添加注释EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'学校名称' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'CollegeName'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'排序' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'OrderBy'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'是否显示在主页' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'IsIndexShow'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'主页显示排序' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'IndexOrderBy'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'是否使用' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'UseFlag'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'增加时间' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'AddTime'GOEXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'增加人' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'T_CollegeInfo', @level2type=N'COLUMN',@level2name=N'AddUserId'go


　　

SQL Server 查看注释的例子
　　
　　

SELECT
表名       = case when a.colorder=1 then d.name else '' end,
表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,
字段序号   = a.colorder,
字段名     = a.name,
标识       = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,
类型       = b.name,
占用字节数 = a.length,
长度       = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数   = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空     = case when a.isnullable=1 then '√'else '' end,
默认值     = isnull(e.text,''),
字段说明   = isnull(g.[value],'')
FROM
syscolumns a
left join
systypes b
on
a.xusertype=b.xusertype
inner join
sysobjects d
on
a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties'
left join
syscomments e
on
a.cdefault=e.id
left join
sys.extended_properties   g
on
a.id=G.major_id and a.colid=g.minor_id  
left join
sys.extended_properties f
on
d.id=f.major_id and f.minor_id=0
where
d.name='T_CollegeInfo'    --如果只查询指定表,加上此条件
order by
a.id,a.colorder