SQL获取所有用户名,数据库名、所有表名、所有字段名及字段类型2009-03-14 10:481.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 Name3.获取所有表名SELECT Name FROM DatabaseName..SysObjects Where XType='U' ORDER BY NameXType='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'

/****************************************************************************************************************************/

/*--获取连接SQL服务器的信息

所有连接本机的:操作的数据库名,计算机名,用户名,网卡物理地址,IP地址,程序名

--邹建 2003.11(引用请保留此信息)--*/

/*--调用示例--显示所有本机的连接信息exec p_getlinkinfo

--显示所有本机的连接信息,包含ip地址exec p_getlinkinfo @includeip=1

--显示连接指定数据库的信息exec p_getlinkinfo '客户资料'--*/create proc p_getlinkinfo@dbname sysname=null, --要查询的数据库名,默认查询所有数据库的连接信息@includeip bit=0 --是否显示IP地址,因为查询IP地址比较费时,所以增加此控制asdeclare @dbid intset @dbid=db_id(@dbname)

create table #tb(id int identity(1,1),dbname sysname,hostname nchar(128),loginname nchar(128),net_address nchar(12),net_ip nvarchar(15),prog_name nchar(128))insert into #tb(hostname,dbname,net_address,loginname,prog_name)select distinct hostname,db_name(dbid),net_address,loginame,program_name from master..sysprocesseswhere hostname<>'' and (@dbid is null or dbid=@dbid)

if @includeip=0 goto lb_show --如果不显示IP地址,就直接显示

declare @sql varchar(500),@hostname nchar(128),@id intcreate table #ip(hostname nchar(128),a varchar(200))declare tb cursor local for select distinct hostname from #tbopen tbfetch next from tb into @hostnamewhile @@fetch_status=0beginset @sql='ping '+@hostname+' -a -n 1 -l 1'insert #ip(a) exec master..xp_cmdshell @sqlupdate #ip set hostname=@hostname where hostname is nullfetch next from tb into @hostnameend

update #tb set net_ip=left(a,patindex('%:%',a)-1)from #tb a inner join (select hostname,a=substring(a,patindex('Ping statistics for %:%',a)+20,20) from #ipwhere a like 'Ping statistics for %:%') b on a.hostname=b.hostname

lb_show:select   id,dbname as '数据库名',hostname as '客户机名',loginname as '用户名'  ,net_address as '网卡物理地址',net_ip as 'IP地址',prog_name as '应用程序名称'   from   #tb

go