[转载]SQL获取所有用户名,数据库名、所有表名、所有字段名及字段

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..S

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..SysData

bases 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’

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

/*–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
as
declare @dbid int
set @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..sysprocesses
where 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 int
create table #ip(hostname nchar(128),a varchar(200))
declare tb cursor local for select distinct hostname from #tb
open tb
fetch next from tb into @hostname
while @@fetch_status=0
begin
set @sql=’ping ‘+@hostname+’ -a -n 1 -l 1′
insert #ip(a) exec master..xp_cmdshell @sql
update #ip set hostname=@hostname where hostname is null
fetch next from tb into @hostname
end

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 #ip
where 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

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