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psql: FATAL: Ident authentication failed for user “postgres”
I have installed PostgreSQL and pgAdminIII on my Ubuntu Karmic box.
23 Answers
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Right query to get the current number of connections in a PostgreSQL DB
Which of the following two is more accurate?
6 Answers
6
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What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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What is the best way to get all the divisors of a number?
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Subqueries vs joins
I refactored a slow section of an application we inherited from another company to use an inner join instead of a subquery like:
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
I've googled endlessly for a method of getting a complete (and daily updated) list of all Yahoo ticker symbols available through http://finance.yahoo.com
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Python Script execute commands in Terminal
I read this somewhere a while ago but cant seem to find it. I am trying to find a command that will execute commands in the terminal and then output the result.
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Strings as Primary Keys in SQL Database [closed]
I am not very familiar with databases and the theories behind how they work. Is it any slower from a performance standpoint (inserting/updating/querying) to use Strings for Primary Keys than integers?
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How to get first 5 characters from string [duplicate]
How to get first 5 characters from string using php
5 Answers
5
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Throwing cats out of windows
Imagine you're in a tall building with a cat. The cat can survive a fall out of a low story window, but will die if thrown from a high floor. How can you figure out the longest drop that the cat can survive, using the least number of attempts?
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