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The SQL OVER() clause - when and why is it useful?
... retrieve both individual OrderQty values and their sums, counts, averages etc. over groups of same SalesOrderIDs.
Here's a practical example of why windowed aggregates are great. Suppose you need to calculate what percent of a total every value is. Without windowed aggregates you'd have to first d...
How to change language settings in R
...de the file Rconsole (in my installation it is C:\Program Files\R\R-2.15.2\etc\Rconsole); this works also for the command Rscript.
For example you can locate the Rconsole file with this two commands from a command prompt:
cd \
dir Rconsole /s
The first one make the root as the current directory,...
How to get UTF-8 working in Java webapps?
... in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ЦжФ for special cases.
...
MISCONF Redis is configured to save RDB snapshots
...from redis background save FAQ)
echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
sysctl vm.overcommit_memory=1
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When to use Hadoop, HBase, Hive and Pig?
...k. HBase has nothing to do with it. That said, you can efficiently put or fetch data to/from HBase by writing MapReduce jobs. Alternatively you can write sequential programs using other HBase APIs, such as Java, to put or fetch the data. But we use Hadoop, HBase etc to deal with gigantic amounts of ...
How to set NODE_ENV to production/development in OS X
...le project which may not use the same underlying build scripts, libraries, etc. You could at least try to back your point with facts and examples.
– Lewis Diamond
Aug 16 '16 at 20:12
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Difference between size_t and unsigned int?
...t idea how could anyone be expected to use calloc() (and family), strlen() etc.? That seems to me absurd.
– Pryftan
Nov 17 '19 at 20:35
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I need this baby in a month - send me nine women!
...eam, management style, process maturity, difficulty of the subject matter, etc.). In order to scope this a bit better so we can speak about it in anything but sweeping oversimplifications, I'm going to restate your question:
Under what circumstances, if any, can adding team members to a softwar...
how do i block or restrict special characters from input fields with jquery?
...also prevent the user from non-text keypresses like backspace, arrow keys, etc.
– bendytree
Jul 2 '12 at 17:41
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Removing MySQL 5.7 Completely [closed]
...pt-get purge mysql-client-core-5.7
sudo rm -rf /var/log/mysql
sudo rm -rf /etc/mysql
All above commands in single line (just copy and paste):
sudo service mysql stop && sudo killall -9 mysql && sudo killall -9 mysqld && sudo apt-get remove --purge mysql-server mysql-client...