sql server 查询表信息

 SELECT
         '表名'        = e.[name],
         '表说明'      = f.[value],
         '字段序号'    = a.colorder,
         '字段名'      = a.[name],
         '字段类型'    = b.[name],
         '字段长度'    = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
         '占用字节数'  = a.length,
         '字段注释'    = c.[value],
         '小数位数'    = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
         '是否允许空'  = case when a.isnullable=1 then '√'else '' end,
         '默认值'      = d.[text],
         '是否是主键'        = 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
 FROM syscolumns a
 LEFT JOIN systypes b ON a.xusertype = b.xusertype
 LEFT JOIN sys.extended_properties c ON a.id=c.major_id AND a.colid=c.minor_id
 left join syscomments d on a.cdefault=d.id
 left join sysobjects e on a.id=e.id  and e.xtype='U' and  e.[name]<>'dtproperties'
 left JOIN sys.extended_properties f on e.id=f.major_id and f.minor_id=0 --AND f.[name]='MS_Description'--f.name为属性名字,一个表可以有多个属性，表的属性名字右键新建
 WHERE a.id=OBJECT_ID('dbo.Member')

结果为: