Sql Server中，文件批量重命名

--1. 新建自定义函数：从最后一个特定字符开始截取字符串
create function fn_GetLastCharIndex(@Chars varchar(1000),@Char varchar(10))
returns varchar(1000)
begin
    declare @i int
    set @i=CharIndex(@Char,@Chars)
    while(@i>0)
    begin
        set @Chars=Substring(@Chars,@i+1,len(@Chars))
        set @i=CharIndex(@Char,@Chars)
    end
    
    return @Chars
end


--2. 获取文件名列表
if exists(select * from tempdb..sysobjects where id=object_id('tempdb..#temp'))
drop table #temp
create table #temp(filenames varchar(1000))
Insert into #temp(filenames)
Exec master..xp_cmdshell 'dir F:\灌篮高手-全国大赛全彩版'


--3. 重命名
declare @FileName varchar(1000),
    @NewFileName varchar(1000),
    @s varchar(1000)
declare cur_1 cursor for
select dbo.fn_GetLastCharIndex(filenames,' ') FileName from #temp where Right(filenames,4) in ('.jpg') and filenames like '%slamdunk%' order by 1
open cur_1
fetch cur_1 into @FileName
while(@@fetch_status=0)
begin
    set @NewFileName = Replace(@FileName,dbo.fn_GetLastCharIndex(@FileName,'-'),Right('00'+dbo.fn_GetLastCharIndex(@FileName,'-'),7))
    set @s='ren F:\灌篮高手-全国大赛全彩版\' + @FileName + ' ' + @NewFileName    
    Exec master..xp_cmdshell @s,no_output
fetch cur_1 into @FileName
end
deallocate cur_1