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What is the difference between “INNER JOIN” and “OUTER JOIN”?
Also how do LEFT JOIN , RIGHT JOIN and FULL JOIN fit in?
27 Answers
27
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How to remove leading and trailing whitespace in a MySQL field?
I have a table with two fields (countries and ISO codes):
11 Answers
11
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What's the difference between Unicode and UTF-8? [duplicate]
...he system codepage on the current machine, subject to total unportability) and there are Unicode strings (stored internally as UTF-16LE).
This was all devised in the early days of Unicode, before we realised that UCS-2 wasn't enough, and before UTF-8 was invented. This is why Windows's support for ...
What does character set and collation mean exactly?
I can read the MySQL documentation and it's pretty clear. But, how does one decide which character set to use? On what data does collation have an effect?
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Which Eclipse files belong under version control?
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[eclipse-workspace]\.metadata\.plugins\org.eclipse.debug.core\.launches
And they should be copied into your project directory: When your project is refreshed, those configurations will be displayed in the "Run configuration" dialog.
That way, those launch parameter files can be also managed into...
Method names for getting data [closed]
...ted with an
object, it implies the criteria for the set is
already defined and where they are coming from is a hidden detail.
findBooks(criteria)
is when are trying to find a sub-set
of the books based on parameters to
the method call, this will usually
be overloaded with different search
criteria
l...
Custom HTTP headers : naming conventions
... posted to deprecate the recommendation of using the "X-" prefix for non-standard headers. The reason is that when non-standard headers prefixed with "X-" become standard, removing the "X-" prefix breaks backwards compatibility, forcing application protocols to support both names (E.g, x-gzip & ...
What's the difference between Task.Start/Wait and Async/Await?
...g something
You are.
what is the difference between doing Task.Wait and await task?
You order your lunch from the waiter at the restaurant. A moment after giving your order, a friend walks in and sits down next to you and starts a conversation. Now you have two choices. You can ignore your ...
Returning null as an int permitted with ternary operator but not if statement
...itional operator (as described in the Java Language Specification, 15.25), and moves happily on. This will generate a NullPointerException at run time, which you can confirm by trying it.
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im...
Alternative for PHP_excel
... quite as convenient for the end user as XSLX (depending on file extension and Excel version, they may get a warning message), but it's a lot easier to work with than XLS or XLSX.
http://github.com/elidickinson/php-export-data
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