I am sorry, this technique works in search patern param (second), not in replacement string.
Субота, 8 вересня 2012 р. користувач Danfeng Li <[email protected]> написав: > You mean instead of > REPLACE(name,'dir','\\\\\\\\test\\\\sub'); > Using > REPLACE(name,'dir','[\\]test[\]sub'); > ? > > It seems not working for me. > > Thanks. > Dan > > -----Original Message----- > From: Віталій Тимчишин [mailto:[email protected]] > Sent: Saturday, September 08, 2012 12:39 AM > To: [email protected]; [email protected] > Subject: Re: REPLACE with backslash > > I prefer [\\]. It does the same, but you don't need additional escaping. > > 2012/9/8 Bill Graham <[email protected]> > >> To get \ in a regex you need to escape it to \\, since the slash is >> reserved in the regex. Then each slash needs to be escaped again to be >> used in a java string. Hence \\\\. Painful, yes. >> >> >> On Fri, Sep 7, 2012 at 2:06 PM, Danfeng Li <[email protected]> wrote: >> >> > Hi, >> > >> > I'm little bit puzzled about REPLACE when there is backslash involved. >> > >> > I want to replace all the "dir" in the string with "\\test\sub", >> > >> > After a lot of try and error, I finally got it done, but I'm not >> > sure why it is the case. Here's my code >> > >> > A = load 'a.txt' as (name:chararray); B = foreach A generate >> > REPLACE(name,'dir','\\\\\\\\test\\\\sub'); >> > dump B; >> > >> > The thing I'm confused about is why do I need to use "\\\\" in order >> > to generate a "\", can anyone explain the reason? I'm using pig 0.9.1. >> > >> > Thanks. >> > >> > Dan >> > >> >> >> >> -- >> *Note that I'm no longer using my Yahoo! email address. Please email >> me at [email protected] going forward.* >> > > > > -- > Best regards, > Vitalii Tymchyshyn > -- Best regards, Vitalii Tymchyshyn
