sqlserver2008中个字段的详细注解

发布时间：2020-12-12 14:55:28 所属栏目：MsSql教程来源：网络整理

导读：详细见截图：创建的表结构语句： CREATE TABLE [dbo].[TABLE_3]( [ID] [int] IDENTITY(1,1) NOT NULL,[name1] [nchar](10) NULL,[name2] [ntext] NULL,[name3] [numeric](18,2) NULL,[name4] [nvarchar](50) NULL,[name5] [nvarchar](max) NULL,[name6] [re

注意：

sqlserver2008中的特殊字段类型：对于MAX长度的，其在sqlserver内部中使用-1进行表示的

（编辑：李大同）

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截图
详细见截图：创建的表结构语句： CREATE TABLE [dbo].[TABLE_3]( [ID] [int] IDENTITY(1,1) NOT NULL,[name1] [nchar](10) NULL,[name2] [ntext] NULL,[name3] [numeric](18,2) NULL,[name4] [nvarchar](50) NULL,[name5] [nvarchar](max) NULL,[name6] [real] NULL,[name7] [smalldatetime] NULL,[name8] [smallint] NULL,[name9] [smallmoney] NULL,[name10] [sql_variant] NULL,[name11] [text] NULL,[name12] [time](7) NOT NULL,[name13] [timestamp] NULL,[name14] [tinyint] NULL,[name15] [uniqueidentifier] NULL,[name16] [varbinary](50) NULL,[name17] [varbinary](max) NULL,[name18] [varchar](50) NULL,[name19] [varchar](max) NULL,[name20] [xml] NULL,[name21] [bigint] NULL,[name22] [binary](50) NULL,[name23] [bit] NULL,[name24] [char](10) NULL,[name25] [date] NULL,[name26] [datetime] NULL,[name27] [datetime2](7) NULL,[name28] [datetimeoffset](7) NULL,[name29] [decimal](18,1) NULL,[name30] [float] NULL,[name31] [geography] NULL,[name32] [geometry] NULL,[name33] [hierarchyid] NULL,[name34] [image] NULL ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] GO 查询语句如下： --sql server 2008 SELECT 表名 = case when a.colorder=1 then d.name 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,'PRECISION'),小数位数 = isnull(COLUMNPROPERTY(a.id,'Scale'),0),允许空 = case when a.isnullable=1 then '√'else '' end,默认值 = isnull(e.text,'') 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 where d.name='TABLE_3' --如果只查询指定表,加上此条件 order by a.id,a.colorder ?

详细见截图：

创建的表结构语句：

CREATE TABLE [dbo].[TABLE_3](
 [ID] [int] IDENTITY(1,1) NOT NULL,[name1] [nchar](10) NULL,[name2] [ntext] NULL,[name3] [numeric](18,2) NULL,[name4] [nvarchar](50) NULL,[name5] [nvarchar](max) NULL,[name6] [real] NULL,[name7] [smalldatetime] NULL,[name8] [smallint] NULL,[name9] [smallmoney] NULL,[name10] [sql_variant] NULL,[name11] [text] NULL,[name12] [time](7) NOT NULL,[name13] [timestamp] NULL,[name14] [tinyint] NULL,[name15] [uniqueidentifier] NULL,[name16] [varbinary](50) NULL,[name17] [varbinary](max) NULL,[name18] [varchar](50) NULL,[name19] [varchar](max) NULL,[name20] [xml] NULL,[name21] [bigint] NULL,[name22] [binary](50) NULL,[name23] [bit] NULL,[name24] [char](10) NULL,[name25] [date] NULL,[name26] [datetime] NULL,[name27] [datetime2](7) NULL,[name28] [datetimeoffset](7) NULL,[name29] [decimal](18,1) NULL,[name30] [float] NULL,[name31] [geography] NULL,[name32] [geometry] NULL,[name33] [hierarchyid] NULL,[name34] [image] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

查询语句如下：

--sql server 2008
SELECT 
    表名       = case when a.colorder=1 then d.name 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,'PRECISION'),小数位数   = isnull(COLUMNPROPERTY(a.id,'Scale'),0),允许空     = case when a.isnullable=1 then '√'else '' end,默认值     = isnull(e.text,'')
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
where 
    d.name='TABLE_3'    --如果只查询指定表,加上此条件
order by 
    a.id,a.colorder

截图