将变量传递到xp_cmdshell [英] Passing variable into xp_cmdshell

问题描述

我在SQL Server中有一个存储过程，用于检查今天的备份文件(文件名中带有日期的文件).检查后，它将robocopy这些文件移至另一个文件夹.

I have a stored procedure in SQL Server that checks for today's backup files (files that has a date in its filename). After checks, it will move on to robocopy these files to another folder.

挑战:在此文件夹中，可能有昨天或其他日期的文件.但是，仅需要今天的bak文件即可进行传输.

The challenge: In this folder, there could be files from yesterday's or other dates. But only today's bak files are required for transfer.

--@day allows me to capture the day of a month
declare @day char(2)
set @day = RIGHT('00' + CONVERT(NVARCHAR(2),DATEPART(DAY,GETDATE())),2)
--print @day

--In "MyFolder", it might containts files like 
--Project_backupfile_01_2006_02_28_001.bak
--OR Project_backupfile_01_2006_02_27_001.bak

--Currently I need to hard code 28 to represent 28th. How to pass in @day?
EXEC master..xp_cmdshell 'dir d:\myfolder\Project*28*.bak/b'

--Similarly, I would like to pass in @day variable so that the --Project_backupfile*02_*@day.bak

-- Copy the backup fules from ftp to a local drive
EXEC master..xp_cmdshell 'robocopy "d:\source" "E:\MSSQL\Restore\" Project_backupfile*_02_28*.bak /NFL /NDL /COPY:DAT /R:2 /W:1 /XO /E /Z /MT:10' 

推荐答案

使用变量来形成命令，然后再将其传递给xp_cmdshell

Use a variable to form the command before passing it to xp_cmdshell

declare @cmd varchar(100)
select @cmd = 'dir d:\myfolder\Project*' + datename(day, getdate()) + '*.bak/b'
-- print @cmd
exec master..xp_cmdshell @cmd

注意:datename(day, getdate())将为您提供字符串形式的月份.

Note: datename(day, getdate()) will give you the day of the month as a string.

stuff(convert(varchar(5), getdate(), 101), 3, 1, '_')将给您02_28

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