Sql Server 查询数据库，所有表，列，类型

查询所有表   select Sysobjects.Name from SysObjects

查询所有类型   select SysTypes.Name from SysTypes

查询所有列   select SysColumns.Name from SysColumns

查询列长度 select SysColumns.length from SysColumns

查询库 select * from master.dbo.sysdatabases order by dbid