先创建一个视图
create view fielddesc
as
select o.name as table_name,c.name as field_name,t.name as type,c.length as
length,c.isnullable as isnullable,convert(varchar(30),p.value) as desp
from syscolumns c
join systypes t on c.xtype = t.xusertype
join sysobjects o on o.id=c.id
left join sysproperties p on p.smallid=c.colid and p.id=o.id
where o.xtype='u'
查询时:
select * from fielddesc where table_name = '你的表名'
还有个更强的语句，是邹建写的，也写出来吧
select
(case when a.colorder=1 then d.name else '' end) n'表名',
a.colorder n'字段序号',
a.name n'字段名',
(case when columnproperty( a.id,a.name,'isidentity')=1 then '√'else '' end) n'标识',
(case when (select count(*)
from sysobjects
where (name in
(select name
from sysindexes
where (id = a.id) and (indid in
(select indid
from sysindexkeys
where (id = a.id) and (colid in
(select colid
from syscolumns
where (id = a.id) and (name = a.name))))))) and
(xtype = 'pk'))>0 then '√' else '' end) n'主键',
b.name n'类型',
a.length n'占用字节数',
columnproperty(a.id,a.name,'precision') as n'长度',
isnull(columnproperty(a.id,a.name,'scale'),0) as n'小数位数',
(case when a.isnullable=1 then '√'else '' end) n'允许空',
isnull(e.text,'') n'默认值',
isnull(g.[value],'') as n'字段说明'
--into ##tx
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 object_name(a.id),a.colorder
