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How do I force Postgres to use a particular index?
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I even had to set random_page_cost = 0.1 in order to make index scan work on large (~600M rows table) in Pg 10.1 on Ubuntu. Without the tweak, seq scan (despite being parallel) was taking 12 mins (Note that Analyze table was performed!). Drive is SSD. After the tweak,...
Differences between Ant and Maven [closed]
...rkload of developers tasked with creating and managing build processes. In order to do this it has to be complex. Unfortunately that complexity tends to negate their intended goal.
When compared with Ant, the build guy on a Maven project will spend more time:
Reading documentation: There is much...
In which order do CSS stylesheets override?
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Then there's no specific rule as to in what order stylesheets load? I understand how CSS displays in terms of specificity, but then I'll assume my master sheet will load unless overridden.
– ian5v
Feb 27 '12 at 1:49
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JavaScript - Getting HTML form values
...s though. You still need to call and iterate through FormData.entries() in order to retrieve the values. Additionally, FormData.entries() is not available in Safari, Explorer, or Edge. developer.mozilla.org/en-US/docs/Web/API/FormData
– dave
Oct 11 '17 at 21:08...
Why does make think the target is up to date?
...going to be part of issue 8 of the POSIX standard austingroupbugs.net/view.php?id=523
– osvein
Jul 29 '17 at 9:31
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Finding all cycles in a directed graph
...point of multiple practical algorithms which apply various enhancements in order to improve performance and avoid cycle duplication. I was surprised to find out some time ago that these algorithms are not readily available in textbooks and on the web. So I did some research and implemented 4 such al...
Rails 3: Get Random Record
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Thing.first(:order => "RANDOM()") # For MySQL :order => "RAND()", - thanx, @DanSingerman
# Rails 3
Thing.order("RANDOM()").first
or
Thing.first(:offset => rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Ac...
Difference between jar and war in Java
...here too)) .jsp files images, files etc.
All WAR content that is there in order to create a self-contained module.
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FIND_IN_SET() vs IN()
I have 2 tables in my database. One is for orders, and one is for companies.
6 Answers
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How do you delete all text above a certain line
...in insert mode without deleting anything?
– too much php
Nov 12 '10 at 6:38
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TMTOWTDI is not on...