SQL Server：如何选择安装路径？

我知道有一个变量、函数或存储过程可用于查找SQL Server的安装路径：

e、 g:

或

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实际上，我希望选择默认备份路径。但是，由于我怀疑它是否存在，所以我将把\BACKUP添加到安装路径上，并称之为足够接近

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更新一

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当你运行这个程序时会发生什么

select filename from sysaltfiles
where name = db_name()

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如果要查看主数据库所在的位置，请将db_name（）更改为“master”

执行以下操作以检查注册表，以找到相应的键

Declare @Path as varchar(100);
Set @Path = NULL

Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\70\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 7.0 path] 

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\80\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 2000 path] 

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\90\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 2005 path]

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\100\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server KATMAI path]

如何选择安装路径 注意：xp\u instance\u regrad不会读取您指定的注册表项，而是将该注册表项路径转换为您正在运行的特定SQL Server实例的适当路径。换句话说：xp\u重磨在xp\u实例重磨成功时失败

SQL Server安装目录 SQL Server备份目录

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这需要知道您当前正在与哪个版本的SQL Server交谈；xp\u实例\u regread+SERVERPROPERTY（'ProductVersion'）解决了一个问题，即它没有返回正确的内容：“c:\Program Files\Microsoft SQL Server\80\Tools”与“c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL”没有返回任何内容。将结果添加到OPThis中真是太棒了。很好的问题和答案。您缺少“END”，所以我添加了它，格式化了代码，并将其放入代码块中。

select filename from sysaltfiles
where name = db_name()

Server: Msg 208, Level 16, State 1, Line 1
Invalid object name 'sysaltfiles'.

select filename from master.dbo.sysaltfiles
where name = db_name()

filename
---------------- 

(0 row(s) affected)

select filename from sysaltfiles
where name = db_name()

Declare @Path as varchar(100);
Set @Path = NULL

Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\70\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 7.0 path] 

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\80\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 2000 path] 

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\90\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server 2005 path]

Set @Path = NULL
Exec master..xp_regread 'HKEY_LOCAL_MACHINE', 'SOFTWARE\Microsoft\Microsoft SQL Server\100\Tools\ClientSetup', 'SQLPath', @Path OUTPUT
Select @Path as [Sql Server KATMAI path]

declare @rc int, @dir nvarchar(4000) 

exec @rc = master.dbo.xp_instance_regread
      N'HKEY_LOCAL_MACHINE',
      N'Software\Microsoft\MSSQLServer\Setup',
      N'SQLPath', 
      @dir output, 'no_output'
select @dir AS InstallationDirectory

declare @rc int, @dir nvarchar(4000) 

exec @rc = master.dbo.xp_instance_regread
      N'HKEY_LOCAL_MACHINE',
      N'Software\Microsoft\MSSQLServer\MSSQLServer',
      N'BackupDirectory', 
      @dir output, 'no_output'
select @dir AS BackupDirectory

CREATE FUNCTION Fn_sqlservertoolsdir()
returns NVARCHAR(4000)
AS
  BEGIN
      DECLARE @rc  INT,
              @dir NVARCHAR(4000),
              @key NVARCHAR(4000)

      SET @key = N'Software\Microsoft\Microsoft SQL Server\' + Replace(Cast(Serverproperty('ProductVersion') AS CHAR(2)), '.', '') + '0' + '\Tools\ClientSetup'

      EXEC @rc = master.dbo.Xp_regread
        N'HKEY_LOCAL_MACHINE',
        @key,
        N'Path',
        @dir output,
        'no_output'

      RETURN @dir
  END