SELECT Name FROM Master..SysDatabases ORDER BY Name --获得所有数据库 SELECT Name FROM [数据库名]..SysObjects Where XType='U' ORDER BY Name --获得数据库下的所有表 select name from syscolumns where id=object_id(N'表名') --获得表里的所有字段

select syscolumns.name as 字段,syscolumns.isnullable as 可否为空,systypes.name as SQL类型, ISNULL(sys.identity_columns.is_identity,0) as 递增, ISNULL(sys.extended_properties.value,'') as 描述 from sysobjects join syscolumns on sysobjects.id = syscolumns.id join systypes on syscolumns.xusertype = systypes.xusertype left join sys.identity_columns on sys.identity_columns.object_id = syscolumns.id and sys.identity_columns.column_id = syscolumns.colid left join sys.extended_properties on sys.extended_properties.major_id = syscolumns.id and sys.extended_properties.minor_id = syscolumns.colid where sysobjects.name = '表名'