根据表名查找相应表结构

SELECT
'表名' =case when a.colorder=1 then d.name else''end,
'表说明'=case when a.colorder=1 then isnull(f.value,'') 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 1FROM 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,
'外键' =case when exists(SELECT 1 FROM sysforeignkeys WHERE sysforeignkeys.fkeyid = d.id and sysforeignkeys.fkey=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.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='BaseClient'--这里为要查询的表名