返回数据库内所有表的字段详细说明的SQL语句
SELECT
(case when a.colorder=1 then d.name else '' end) N'表名',
a.colorder N'字段序号',
a.name N'字段名',
(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else ''
end) N'标识',
(case when (SELECT count(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = 'PK'))>0 then '√' else '' end) N'主键',
b.name N'类型',
a.length N'占用字节数',
COLUMNPROPERTY(a.id,a.name,'PRECISION') as N'长度',
isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as N'小数位数',
(case when a.isnullable=1 then '√'else '' end) N'允许空',
isnull(e.text,'') N'默认值',
isnull(g.[value],'') AS N'字段说明'
FROM syscolumns a
left join systypes b
on a.xtype=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
order by object_name(a.id),a.colorder
数据库参考手册
/*备份数据库的存储过程*/
if exists(
select * from sysobjects
where name='pr_backup_db' and xtype='p'
)
begin
drop proc pr_backup_db
end
go
create proc pr_backup_db
@flag varchar(20) out,
@backup_db_name varchar(128),
@filename varchar(1000) --路径＋文件名字
as
declare @sql nvarchar(4000),@par nvarchar(1000)
if not exists(
select * from master..sysdatabases
where name=@backup_db_name
)
begin
select @flag='数据库不存在' --数据库不存在*/
return
end
else
begin
if right(@filename,1)<>'\' and charindex('\',@filename)<>0
begin
select @par='@filename varchar(1000)'
select @sql='BACKUP DATABASE '+@backup_db_name+' to disk=@filename with init'
execute sp_executesql @sql,@par,@filename
select @flag='备份成功'
return
end
else
begin
select @flag='文件路径有错误' /*参数@filename输入格式错误*/
return
end
end
GO
--说明:pr_backup_db过程是备份你的数据库
/*创建函数,得到文件得路径*/
if exists(
select * from sysobjects
where name='fn_GetFilePath' and xtype='fn'
)
begin
drop function fn_GetFilePath
end
go
create function fn_GetFilePath(@filename nvarchar(260))
returns nvarchar(260)
as
begin
declare @file_path nvarchar(260)
declare @filename_reverse nvarchar(260)
select @filename_reverse=reverse(@filename)
select @file_path=substring(@filename,1,len(@filename)+1-charindex('\',@filename_reverse))
return @file_path
end
GO
/*恢复数据库的存储过程*/
if exists(
select * from sysobjects
where name='pr_restore_db' and xtype='p'
)
begin
drop proc pr_restore_db
end
go
CREATE proc pr_restore_db
@flag varchar(20) out, /*过程运行的状态标志,是输入参数*/
@restore_db_name nvarchar(128), /*要恢复的数据名字*/
@filename nvarchar(260) /*备份文件存放的路径+备份文件名字*/
as
declare @proc_result tinyint /*返回系统存储过程xp_cmdshell运行结果*/
declare @loop_time smallint /*循环次数*/
declare @max_ids smallint /*@tem表的ids列最大数*/
declare @file_bak_path nvarchar(260) /*原数据库存放路径*/
declare @flag_file bit /*文件存放标志*/
declare @master_path nvarchar(260) /*数据库master文件路径*/
declare @sql nvarchar(4000),@par nvarchar(1000)
declare @sql_sub nvarchar(4000)
declare @sql_cmd nvarchar(100)
declare @sql_kill nvarchar(100)
/*
判断参数@filename文件格式合法性，以防止用户输入类似d: 或者 c:\a\ 等非法文件名
参数@filename里面必须有'\'并且不以'\'结尾
*/
if right(@filename,1)<>'\' and charindex('\',@filename)<>0
begin
select @sql_cmd='dir '+@filename
EXEC @proc_result = master..xp_cmdshell @sql_cmd,no_output
IF (@proc_result<>0) /*系统存储过程xp_cmdshell返回代码值:0(成功）或1（失败）*/
begin
select @flag='not exist' /*备份文件不存在*/
return /*退出过程*/
end
/*创建临时表,保存由备份集内包含的数据库和日志文件列表组成的结果集*/
create table #tem(
LogicalName nvarchar(128), /*文件的逻辑名称*/
PhysicalName nvarchar(260) , /*文件的物理名称或操作系统名称*/
Type char(1), /*数据文件 (D) 或日志文件 (L)*/
FileGroupName nvarchar(128), /*包含文件的文件组名称*/
[Size] numeric(20,0), /*当前大小（以字节为单位）*/
[MaxSize] numeric(20,0) /*允许的最大大小（以字节为单位）*/
)
/*
创建表变量，表结构与临时表基本一样
就是多了两列,
列ids（自增编号列）,
列file_path,存放文件的路径
*/
declare @tem table(
ids smallint identity, /*自增编号列*/
LogicalName nvarchar(128),
PhysicalName nvarchar(260),
File_path nvarchar(260),
Type char(1),
FileGroupName nvarchar(128)
)
insert into #tem
execute('restore filelistonly from disk='''+@filename+'''')
/*将临时表导入表变量中,并且计算出相应得路径*/
insert into @tem(LogicalName,PhysicalName,File_path,Type,FileGroupName)
select LogicalName,PhysicalName,dbo.fn_GetFilePath(PhysicalName),Type,FileGroupName
from #tem
if @@rowcount>0
begin
drop table #tem
end
select @loop_time=1
select @max_ids=max(ids) /*@tem表的ids列最大数*/
from @tem
while @loop_time<=@max_ids
begin
select @file_bak_path=file_path
from @tem where ids=@loop_time
select @sql_cmd='dir '+@file_bak_path
EXEC @proc_result = master..xp_cmdshell @sql_cmd,no_output
/*系统存储过程xp_cmdshell返回代码值:0(成功）或1（失败）*/
IF (@proc_result<>0)
select @loop_time=@loop_time+1
else
BREAK /*没有找到备份前数据文件原有存放路径，退出循环*/
end
select @master_path=''
if @loop_time>@max_ids
select @flag_file=1 /*备份前数据文件原有存放路径存在*/
else
begin
select @flag_file=0 /*备份前数据文件原有存放路径不存在*/
select @master_path=dbo.fn_GetFilePath(filename)
from master..sysdatabases
where name='master'
end
select @sql_sub=''
/*type='d'是数据文件,type='l'是日志文件 */
/*@flag_file=1时新的数据库文件还是存放在原来路径，否则存放路径和master数据库路径一样*/
select @sql_sub=@sql_sub+'move '''+LogicalName+''' to '''
+case type
when 'd' then case @flag_file
when 1 then File_path
else @master_path
end
when 'l' then case @flag_file
when 1 then File_path
else @master_path
end
end
+case type
when 'd' then @restore_db_name
+'_DATA'
+convert(sysname,ids) /*给文件编号*/
+'.'
+right(PhysicalName,3) /*给文件加入后缀名,mdf or ndf*/
+''','
when 'l' then @restore_db_name
+'_LOG'
+convert(sysname,ids) /*给文件编号*/
+'.'
+right(PhysicalName,3) /*给文件加入后缀名,mdf or ndf*/
+''','
end
from @tem
select @sql='RESTORE DATABASE @db_name FROM DISK=@filename with '
select @sql=@sql+@sql_sub+'replace'
select @par='@db_name nvarchar(128),@filename nvarchar(260)'
/*关闭相关进程，把相应进程状况导入临时表中*/
select identity(int,1,1) ids, spid
into #temp
from master..sysprocesses
where dbid=db_id(@restore_db_name)
if @@rowcount>0 --找到相应进程
begin
select @max_ids=max(ids)
from #temp
select @loop_time=1
while @loop_time<=@max_ids
begin
select @sql_kill='kill '+convert(nvarchar(20),spid)
from #temp
where ids=@loop_time
execute sp_executesql @sql_kill
select @loop_time=@loop_time+1
end
end
drop table #temp
execute sp_executesql @sql,@par,@db_name=@restore_db_name,@filename=@filename
select @flag='恢复成功' /*操作成功*/
end
else
begin
SELECT @flag='文件路径有错误' /*参数@filename输入格式错误*/
end
GO
--run
--备份数据库test_database
declare @fl varchar(100)
execute pr_backup_db @fl out,'cxsjstorage','c:\test_database.bak'
select @fl
EXEC sp_dboption 'master', 'single user', 'TRUE'
RESTORE database master from disk='D:\tomcat5.5\webapps\cxsj\storage\data\master_bak'
sp_helptext pr_backup_db
--恢复数据库,输入的参数错误
declare @fl varchar(100)
exec pr_restore_db @fl out,'cxsjstorage','c:\test_database.bak'
select @fl
select * from #tem
--恢复数据库,即创建数据库test_database的复本test_db
declare @fl varchar(20)
exec pr_restore_db @fl out,'test_db2','c:\test_database.bak'
select @fl
select * from employee
select * from danju
直接复制就可以使用,很方便,经过测试,没有问题~!