Check this post on depesz.com:
http://www.depesz.com/2012/04/04/lets-talk-dirty/

2012/9/18 Craig Ringer <ringerc(at)ringerc(dot)id(dot)au>

> Also, are there any functions to read raw tuple bytes to `RECORD's? I
> couldn't find any in `pageinspect', `pgstattuple', `adminpack', etc. Am I
> right in guessing that they're pretty much going to require hand data
> recovery or the use of some custom C extension code to get at the data - if
> it still exists?
>


-- 
Victor Y. Yegorov

In response to

• Data recovery after inadvertent update? at 2012-09-18 09:10:54 from Craig Ringer

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