查询表名为tb_menu的所有列名
1select name from syscolumns where id=object_id("tb_menu")
查询表名为tb_menu的所有列名个数
1select count(name) from syscolumns where id=object_id("tb_menu")
或者
1
2
3select count(syscolumns.name)
from syscolumns ,sysobjects
where syscolumns.id=sysobjects.id and sysobjects.name = "tb_menu"