1.获取所有用户名:
SELECT name FROM Sysusers where status=\'2\' and islogin=\'1\'
islogin=\'1\'表示帐户
islogin=\'0\'表示角色
status=\'2\'表示用户帐户
status=\'0\'表示糸统帐户
2.获取所有数据库名:
SELECT Name FROM Master..SysDatabases ORDER BY Name
3.获取所有表名
SELECT Name FROM DatabaseName..SysObjects Where XType=\'U\' ORDER BY Name
XType=\'U\':表示所有用户表;
XType=\'S\':表示所有系统表;
4.获取所有字段名:
SELECT Name FROM SysColumns WHERE id=Object_Id(\'TableName\')
5.获取数据库所有类型
select name from systypes
6.获取主键字段
SELECT name FROM SysColumns WHERE id=Object_Id(\'表名\') and colid=(select top 1 keyno from sysindexkeys where id=Object_Id(\'表名\'))
7、获取字段类型
select a.name as [column],b.name as type from syscolumns a,systypes b where a.id=object_id(\'表名\') and a.xtype=b.xtype
或者可以通过存储过程 exec sp_help 表名
8、取表结构
select column_name,data_type,character_maximum_length from information_schema.columns where table_name = \'表名\'