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Should each and every table have a primary key?
...most probably, you are missing something. Why keep identical records?
In MySQL, the InnoDB storage engine always creates a primary key if you didn't specify it explicitly, thus making an extra column you don't have access to.
Note that a primary key can be composite.
If you have a many-to-many l...
Add only non-whitespace changes
... if you have a handy alias to execute a bash command in the working tree's root. The incorrect formulation is:
sh = !bash -c '"$@"' -
While the correct one is:
sh = !bash -c '\"$@\"' -
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Entity Framework vs LINQ to SQL
...oject "dblinq" replaces the LINQ to SQL assembly with one that can talk to MySQL, PostgreSQL, Ingres, Firebird, SQLite ... and Microsoft SQL (of course).
– Contango
Dec 24 '10 at 11:41
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Sending event when AngularJS finished loading
...compile function do whatever you want to do. :) Place the directive on the root element of your app. You can call the directive something like myOnload and use it as an attribute my-onload. The compile function will execute once the template has been compiled (expressions evaluated and sub-templates...
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file
...hat from English to German (and thus not having the file anymore in either root or en.lproj), I started to have trouble.
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How can I have ruby logger log output to stdout as well as file?
...can do:
# config/environment/production.rb
file_logger = Logger.new(Rails.root.join("log/alternative-output.log"))
config.logger.extend(ActiveSupport::Logger.broadcast(file_logger))
Or if you're on Rails 3, you can backport it:
# config/initializers/alternative_output_log.rb
# backported from r...
Bootstrap 3.0 - Fluid Grid that includes Fixed Column Sizes
...bootstrap3 grid system supports row nesting which allows you to adjust the root row to allow fixed width side menus.
You need to put in a padding-left on the root row, then have a child row which contains your normal grid layout elements.
Here is how I usually do this
http://jsfiddle.net/u9gjjebj/...
What is the optimal length for an email address in a database?
... then you can/must use a VARCHAR(254) to store an email address.
Note: In MySQL at least, a column declared as VARCHAR whit less or equal than 255 octets will be all stored as 1 byte + length (the 1 is to store the length) so no space is gained if used a lower limit.
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How can I join multiple SQL tables using the IDs?
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Not the answer you're looking for? Browse other questions tagged mysql sql join or ask your own question.
Revert the `--no-site-packages` option with virtualenv
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At least for Python 3.5.2, there is pyvenv.cfg file in the root of virtualenv directory. All you need to do is to change include-system-site-packages flag from false to true:
home = /usr/bin
include-system-site-packages = false # <- change this to "true"
version = 3.5.2
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