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From: Arthur Lewis <arthur.lewis@hypermediasystems.com>
To: David G. Johnston <david.g.johnston@gmail.com>
Cc: Adrian Klaver <adrian.klaver@aklaver.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: insert a text file into a variable in order to insert into a bytea column
Date: Thu, 28 Jan 2016 14:36:02 -0800 (PST)
Message-ID: <1374628469.7191030.1454020562643.JavaMail.root@hypermediasystems.com> (raw)
In-Reply-To: <CAKFQuwY8hGODYwA9eEp4dAUo3VtpVie8He4J9ZdJ22CskzJ22w@mail.gmail.com>
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Hi David,
Yes you're correct.  The problem is caused by the back-ticks (`)  Here is what I found in the docs about back-ticks

"Within an argument, text that is enclosed in backquotes (`) is taken as a command line that is passed to the shell. The output of the command (with any trailing newline removed) replaces the backquoted text."

Arthur Lewis



----- Original Message -----
From: "David G. Johnston" <david.g.johnston@gmail.com>
To: "Arthur Lewis" <arthur.lewis@hypermediasystems.com>
Cc: "Adrian Klaver" <adrian.klaver@aklaver.com>, pgsql-sql@postgresql.org
Sent: Thursday, January 28, 2016 1:57:38 PM
Subject: Re: [SQL] insert a text file into a variable in order to insert into a bytea column



On Thu, Jan 28, 2016 at 2:08 PM, Arthur Lewis < arthur.lewis@hypermediasystems.com > wrote: 




postgres=> \set stext `cat file.txt` 
postgres=> select octet_length(:'stext'); 
octet_length 
-------------- 
53603 

in my shell I did the following: 
$ ls -l file.txt 
-rw-rw-r-- 1 alewis alewis 53604 Jan 27 08:30 file.txt 

I'm still one byte short. So the problem has to be either the \set command chomping it or cat. I just tested cat and that seems to be working. 







​Or the "back-ticks" implementation... 




David J.​


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