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by Boris Barroso
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Published on 2010-03-30T19:04:20Z
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2010/03/30
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How can I count the table size in MySQL or PosgreSQL using a restriction? for example: WHERE organisation_id=1
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I have misconception in understanding the relationship between Ruby language and Ruby on Rails Framework. Because of 'I am an absolute beginner' in web development I have no idea if I have to grasp the fundamentals of Ruby before I go with Ruby on Rails!
I also want to ask who is behind both Ruby…
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My RoR server receives a string, that was encrypted in C++ application using des3 with base64 encoding
The cipher object is created so:
cipher = OpenSSL::Cipher::Cipher::new("des3")
cipher.key = key_str
cipher.iv = iv_str
key_str and iv_str: are string representations of key and initialization…
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Hi Guys, I'm having few doubts on implementing file downloads. I'm creating an app where I use attachment_fu with Amazon s3 to upload files. Things are working pretty well so far on uploading side. Now its the time to start the file downloads. Here is what I need, a logged in user search and browse…
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A lot of PDFs are stored inside MySQL as a BLOB field for each PDF file. The average file size is 500K each.
The Rails app will stream the :binary data as file downloads, where there is a user click on the download link.
Assume there is a maximum of 5 users downloading 5 PDFs concurrently, what…
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Applying the Behavior Driven Development (BDD) methodology to your Rails development takes you beyond traditional Test Driven Development. Learn how to do it with the Ruby-based BDD framework RSpec.
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I installed postgresql 9.2 from add-apt-repository ppa:pitti/postgresql using apt-get install postgresql-9.2
At the end of the install and every time I try to launch postgresql by using the following command
/etc/init.d/postgresql start
or
service postgresql start
I get this error:
Error:…
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I tried install psycopg2 via pip in my virtual env, but got this error:
ld: library not found for -lpq
(full log here: http://pastebin.com/XdmGyJ4u )
I tried install postgres 9.1 from .dmg and via port,
(gksks)iMac-Alexander:~ lorddaedra$ locate libpq
/Developer/SDKs/MacOSX10.7.sdk/usr/include/libpq
/Developer/SDKs/MacOSX10…
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On ubuntu 12.04, whenever I try to install a package using apt-get I'm greeted by:
The following packages have unmet dependencies:
postgresql-9.1 : Depends: postgresql-client-9.1 but it is not going to be instal
led
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a so
lution)…
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Hey everyone, I am trying to install (using ports) PostgreSQL on a virtual server, running FreeBSD. My one question is this:
Which of the following should I install?
postgresql-contrib
postgresql-docs
postgresql-jdbc
postgresql-libpgeasy
postgresql-libpq++
postgresql-libpqxx
postgresql-odbc
…
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A freshly installed PostgreSQL (with configuration overwritten) won't start:
$ sudo service postgresql start
* Starting PostgreSQL 9.1 database server
* Error: could not read /etc/postgresql/9.1/main/postgresql.conf: Permission denied
Looks like it should be able to read it though:
$ ls -l postgresql…
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