快速查看sql表的字段信息

 SELECT 
    字段序号   = a.colorder,
    字段名     = a.name,
    类型       = b.name,
    长度       = COLUMNPROPERTY(a.id,a.name,‘PRECISION‘),
    字段说明   = isnull(g.[value],‘‘),
    是否允许空     = 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
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=‘table‘    ---修改表名称
order by 
    a.id,a.colorder