用Sql语句生成Sqlserver数据字典

     因为在研究他们的数据结构时 经常遇到的问题是对其数据结构不太了解，需要花很长时间去看懂

现在，我的博客中的相关文章会提到一些系统的学习资料，谢谢大家提出意见和更好的思路。

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 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.xtype=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 sysproperties g on a.id=g.id 

   and a.colid=g.smallid  

   order by a.id,a.colorder