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..sysdatabases order by name 3.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