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ORA-00979 not a group by expression
...ow as result with the first column 0 to fulfill the GROUP BY but there are now two values of bar to chose from. Which result would you expect - A or B? Or should the database return more than one row, violating the contract of GROUP BY?
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How to create a multi-tenant database with shared table structures?
....
How many prospective tenants do you expect to target? You may be nowhere
near being able to estimate
prospective use with authority, but
think in terms of orders of magnitude:
are you building an application for
hundreds of tenants? Thousands? Tens
of thousands? More? The large...
Android ViewPager with bottom dots
...upvoted before I ask the question, because it already helped me a lot, but now I wish I can apvote +2 or +100 :) because adding the onPageChangeListener worked perfectly for me! And just to make it clear for anyone that may use this, you need to do your updates on the onPageSelected callback only, a...
How to use permission_required decorators on django class-based views
...sion_required() and the login_required attribute in the view, but I don't know how to do this on the new views. Is there some section in the django docs explaining this? I didn't found anything. What is wrong in my code?
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How well is Unicode supported in C++11?
...le to focus on an encoding that was superseded over 20 years ago, I don't know‡. It's not like support for more encodings is bad or anything, but UCS-2 shows up too often here.
I would say that char16_t is obviously meant for storing UTF-16 code units. However, this is one part of the s...
What's the best way to share data between activities?
...ies which I would like to be able to use the data from the first activity.
Now I know I can do something like this:
14 Answ...
How to use classes from .jar files?
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Not every jar file is executable.
Now, you need to import the classes, which are there under the jar, in your java file. For example,
import org.xml.sax.SAXException;
If you are working on an IDE, then you should refer its documentation. Or at least specif...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...o do this:
DEBUG VIEW HIERARCHY (Do not recommend this way)
Since you know where to find unexpected constraints (PBOUserWorkDayHeaderView) there is a way to do this fairly well. Lets find UIView and NSLayoutConstraint in red rectangles. Since we know their id in memory it is quite easy.
Stop a...
Builder Pattern in Effective Java
...ium;
this.fat = b.fat;
this.carbo = b.carbo;
}
}
And now you can set the properties as follows:
NutritionalFacts n = new NutritionalFacts.Builder().sodium(10).carbo(15).
fat(5).build();
share
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How to run iPhone emulator WITHOUT starting Xcode?
On my old Mac running Snow Leopard, I could type "ios" into spotlight and it would start up the iPhone/iPad emulator by itself.
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