数据库系统表的总结与应用

有一个是用Rollback Transaction来回滚操作

Select * From master.dbo.sysdatabases 查询本数据库信息

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Sysobjects：SQL-SERVER的每个数据库内都有此系统表，它存放该数据库内创建的

所有对象，如约束、默认值、日志、规则、存储过程等，每个对象在表中占一行。
对象类型(xtype)。可以是下列对象类型中的一种：
C =
CHECK 约束
D = 默认值或 DEFAULT 约束
F = FOREIGN KEY 约束
L = 日志
FN = 标量函数

IF = 内嵌表函数
P = 存储过程
PK = PRIMARY KEY 约束（类型是 K）
RF = 复制筛选存储过程

S = 系统表
TF = 表函数
TR = 触发器
U = 用户表
UQ = UNIQUE 约束（类型是 K）

V = 视图
X = 扩展存储过程
当xtype='U' and
status>0代表是用户建立的表，对象名就是表名，对象ID就是表

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syscolumns
：每个表和视图中的每列在表中占一行，存储过程中的每个参数在表
Select c.*,t.name
From dbo.syscolumns c
left join dbo.systypes t on c.xtype=t.xtype
where c.id in (Select id From
sysobjects
where
name='NET_User')
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Select
* From sysaltfiles 主数据库 保存数据库的文件
Select * From
syscharsets 主数据库 字符集与排序顺序
Select * From sysconfigures
主数据库 配置选项
Select * From syscurconfigs 主数据库
当前配置选项
Select * From sysdatabases 主数据库 服务器中的数据库
Select *
From syslanguages 主数据库 语言
Select * From syslogins
主数据库 登陆帐号信息
Select * From sysoledbusers 主数据库
链接服务器登陆信息
Select * From sysprocesses 主数据库 进程
Select *
From sysremotelogins 主数据库 远程登录帐号
Select * From syscolumns
每个数据库 列
Select * From sysconstrains 每个数据库 限制

Select * From sysfilegroups 每个数据库 文件组
Select * From
sysfiles 每个数据库 文件
Select * From sysforeignkeys
每个数据库 外部关键字
Select * From sysindexes 每个数据库 索引

Select * From sysmembers 每个数据库 角色成员
Select * From
sysobjects 每个数据库 所有数据库对象
Select * From syspermissions
每个数据库 权限
Select * From systypes 每个数据库 用户定义数据类型

Select * From sysusers 每个数据库 用户

sql server系统表详细说明
sysaltfiles 主数据库 保存数据库的文件
syscharsets
主数据库字符集与排序顺序
sysconfigures 主数据库 配置选项
syscurconfigs
主数据库当前配置选项
sysdatabases 主数据库服务器中的数据库
syslanguages 主数据库语言
syslogins 主数据库
登陆帐号信息
sysoledbusers 主数据库 链接服务器登陆信息
sysprocesses
主数据库进程
sysremotelogins主数据库 远程登录帐号
syscolumns 每个数据库 列
sysconstrains
每个数据库 限制
sysfilegroups 每个数据库 文件组
sysfiles 每个数据库 文件
sysforeignkeys 每个数据库
外部关键字
sysindexs 每个数据库 索引
sysmenbers 每个数据库角色成员
sysobjects
每个数据库所有数据库对象
syspermissions 每个数据库 权限
systypes 每个数据库 用户定义数据类型
sysusers
每个数据库 用户

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SELECT
OBJECT_NAME (id) [OBJECT_NAME] FROM sysobjects WHERE xtype = 'U' AND
OBJECTPROPERTY (id, 'IsMSShipped') = 0

SELECT
表名=case when a.colorder=1
then d.name else '' end,
表说明=case
when a.colorder=1 then isnull(f.value,'') else '' end,

字段序号=a.colorder,

字段名=a.name,
标识=case when COLUMNPROPERTY(
a.id,a.name,'IsIdentity')=1 then '√'else '' end,

主键=case when exists(SELECT 1 FROM
sysobjects where xtype='PK' and name in (

SELECT name FROM sysindexes WHERE
indid in(
SELECT indid FROM
sysindexkeys WHERE id = a.id AND colid=a.colid

))) then '√' else '' end,

类型=b.name,

占用字节数=a.length,

长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),

小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),

允许空=case when a.isnullable=1 then
'√'else '' end,
默认值=isnull(e.text,''),

字段说明=isnull(g.[value],'')

FROM syscolumns a

left join systypes b on
a.xusertype=b.xusertype
inner join
sysobjects d on a.id=d.id and d.xtype='U' and
d.name<>'dtproperties'
left join
syscomments e on a.cdefault=e.id
left
join sysproperties g on a.id=g.id and a.colid=g.smallid

left join sysproperties f on d.id=f.id
and f.smallid=0
where
d.name='NET_Department' --如果只查询指定表,加上此条件

order by a.id,a.colorder

显示每个表当前有多少行

SELECT TOP 100 Percent sysobjects.name,sysindexes.rows
FROM sysindexes
with(nolock)
JOIN sysobjects with(nolock) ON sysindexes.id = sysobjects.id
AND sysobjects.xtype = 'u'
WHERE sysindexes.indid in(0, 1)
ORDER By
sysobjects.name
ASC
-------------------------------------------------------------------------------------------------------------------
SELECT
---2005
TableName=CASE WHEN C.column_id=1 THEN O.name ELSE N'' END,

Column_id=C.column_id,
ColumnName=C.name,

Type=T.name,
Length=C.max_length,
Precision=C.precision,

Scale=C.scale,
NullAble=CASE WHEN C.is_nullable=1 THEN N'√'ELSE N''
END,
[Default]=ISNULL(D.definition,N''),

ColumnDesc=ISNULL(PFD.[value],N''),
Create_Date=O.Create_Date,

Modify_Date=O.Modify_date
FROM sys.columns C
INNER JOIN sys.objects
O
ON C.[object_id]=O.[object_id]
AND
O.type='U'
AND O.is_ms_shipped=0
INNER JOIN sys.types
T
ON C.user_type_id=T.user_type_id
LEFT JOIN
sys.default_constraints D
ON
C.[object_id]=D.parent_object_id
AND
C.column_id=D.parent_column_id
AND
C.default_object_id=D.[object_id]
LEFT JOIN sys.extended_properties
PFD
ON PFD.class=1
AND C.[object_id]=PFD.major_id

AND C.column_id=PFD.minor_id
LEFT JOIN
sys.extended_properties PTB
ON PTB.class=1
AND
PTB.minor_id=0
AND C.[object_id]=PTB.major_id
--where
O.name='GoToneCustomService' -- 要查询的表名 如果不加默认是该库底下的所有表

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4.如何得到服务器的IP地址
create
table #ip(id int identity(1,1),re varchar(200))
declare @s
varchar(1000)
set @s='ping
'+left(@@servername,charindex('/',@@servername+'/')-1)+' -a -n 1 -l 1'
insert
#ip(re) exec master..xp_cmdshell @s
select 服务器名=@@servername,IP地址=stuff(left(re,charindex(']',re)-1),1,charindex('[',re),'')
from
#ip
where id=2
drop table #ip

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9.如何知道哪些触发器被禁用?
--将trigger
在sysobjects 表中 status字段的值转换为二进制的，第12位为1则表示禁止，为0表示允许

select 表名=object_name(parent_obj),触发器名=name
,状态=case status &
power(2,11) when 0 then N'启用' else N'禁用' end
from sysobjects where
type='TR'

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select
j.name as jobName,step_id,s.step_name,command,database_name from sysjobs
j
right outer join sysjobsteps s
on j.job_id= s.job_id
--where
subsystem ='tsql'
order by j.job_id,s.step_id

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作业
SELECT 作业的名称 = name,
对作业的说明 = description,

计划运行作业的下一个日期 = (SELECT top 1
left(left(next_run_date,4)+'-'+right(next_run_date,4),7)+'-'+right(next_run_date,2)

FROM msdb.dbo.sysjobschedules
WHERE job_id =
sysjobs.job_id),
计划运行作业的时间 = (SELECT top 1
left(left(left('000000',6-len(next_run_time))+ltrim(next_run_time),2)+':'+right(left('000000',6-len(next_run_time))+ltrim(next_run_time),4),5)+':'+right(left('000000',6-len(next_run_time))+ltrim(next_run_time),2)

FROM msdb.dbo.sysjobschedules
WHERE job_id =
sysjobs.job_id),
作业的执行状态 = CASE (SELECT top 1
run_status
FROM
msdb.dbo.sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC)

WHEN 0 THEN '失败'
WHEN 1 THEN
'成功'
WHEN 2 THEN '重试'
WHEN 3 THEN
'已取消'
WHEN 4 THEN '正在进行中'

END,
作业或步骤开始执行的日期 = (SELECT top 1
left(left(run_date,4)+'-'+right(run_date,4),7)+'-'+right(run_date,2)

FROM msdb.dbo.sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

作业或步骤开始的时间 = (SELECT top 1
left(left(left('000000',6-len(run_time))+ltrim(run_time),2)+':'+right(left('000000',6-len(run_time))+ltrim(run_time),4),5)+':'+right(left('000000',6-len(run_time))+ltrim(run_time),2)

FROM msdb.dbo.sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

执行作业或步骤所花费的时间 = (SELECT top 1
left(left(left('000000',6-len(run_duration))+ltrim(run_duration),2)+'小时'+right(left('000000',6-len(run_duration))+ltrim(run_duration),4),5)+'分钟'+right(left('000000',6-len(run_duration))+ltrim(run_duration),2)+'秒'

FROM
msdb.dbo.sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC)
FROM
msdb.dbo.sysjobs

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SQL
server 中的作业信息查询
作业信息存储在MSDB中.可以运行以下存储过程,监视作业的执行情况.

可以参考如下SQL:

SELECT 作业的名称 = name,
对作业的说明 = description,
计划运行作业的下一个日期 =
(SELECT next_run_date
FROM
sysjobschedules
WHERE job_id =
sysjobs.job_id),
计划运行作业的时间 = (SELECT
next_run_time
FROM
sysjobschedules
WHERE job_id = sysjobs.job_id),

作业的执行状态 = CASE (SELECT top 1 run_status
FROM
sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC)

WHEN 0 THEN '失败'
WHEN 1 THEN
'成功'
WHEN 2 THEN '重试'
WHEN 3 THEN
'已取消'
WHEN 4 THEN '正在进行中'

END,
作业或步骤开始执行的日期 = (SELECT top 1
run_date
FROM
sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

作业或步骤开始的时间 = (SELECT top 1 run_time
FROM
sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

执行作业或步骤所花费的时间 = (SELECT top 1 run_duration

FROM sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC)
FROM
sysjobs

如果监视备份作业的执行计划,可以在描述中输入:"备份" 等字样,查询时候可以用description 描述信息过滤.如下:

(注意:对某些字段尽心了翻译和转换)

SELECT 作业的名称 = name,
对作业的说明 = description,
计划运行作业的下一个日期 =
(SELECT
left(left(next_run_date,4)+'-'+right(next_run_date,4),7)+'-'+right(next_run_date,2)

FROM sysjobschedules
WHERE job_id =
sysjobs.job_id),
计划运行作业的时间 = (SELECT
left(left(left('000000',6-len(next_run_time))+ltrim(next_run_time),2)+':'+right(left('000000',6-len(next_run_time))+ltrim(next_run_time),4),5)+':'+right(left('000000',6-len(next_run_time))+ltrim(next_run_time),2)

FROM sysjobschedules
WHERE job_id =
sysjobs.job_id),
作业的执行状态 = CASE (SELECT top 1
run_status
FROM
sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC)

WHEN 0 THEN '失败'
WHEN 1 THEN
'成功'
WHEN 2 THEN '重试'
WHEN 3 THEN
'已取消'
WHEN 4 THEN '正在进行中'

END,
作业或步骤开始执行的日期 = (SELECT top 1
left(left(run_date,4)+'-'+right(run_date,4),7)+'-'+right(run_date,2)

FROM sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

作业或步骤开始的时间 = (SELECT top 1
left(left(left('000000',6-len(run_time))+ltrim(run_time),2)+':'+right(left('000000',6-len(run_time))+ltrim(run_time),4),5)+':'+right(left('000000',6-len(run_time))+ltrim(run_time),2)

FROM sysjobhistory
WHERE job_id =
sysjobs.job_id
ORDER BY instance_id DESC),

执行作业或步骤所花费的时间 = (SELECT top 1
left(left(left('000000',6-len(run_duration))+ltrim(run_duration),2)+'小时'+right(left('000000',6-len(run_duration))+ltrim(run_duration),4),5)+'分钟'+right(left('000000',6-len(run_duration))+ltrim(run_duration),2)+'秒'

FROM sysjobhistory

WHERE job_id = sysjobs.job_id
ORDER BY instance_id
DESC)
FROM sysjobs
WHERE description LIKE '%备份%'

这样就可以监视到备份数据库计划的执行,前台页面就可以用Ajax来无刷新监视备份情况了.

测试后,SQL server 2005 也使用.