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Is a view faster than a simple query?
...n speed up resulting queries.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; Microsoft's own documentation makes it very clear that Views can improve performance.
First, simple views are expanded in place and so do not direc...
Specifying and saving a figure with exact size in pixels
...(800/my_dpi, 800/my_dpi), dpi=my_dpi)
So you basically just divide the dimensions in inches by your DPI.
If you want to save a figure of a specific size, then it is a different matter. Screen DPIs are not so important anymore (unless you ask for a figure that won't fit in the screen). Using the ...
What is the use of making constructor private in a class?
...
Some reasons where you may need private constructor:
The constructor can only be accessed from static factory method inside the class itself. Singleton can also belong to this category.
A utility class, that only contains sta...
Left align two graph edges (ggplot)
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Perfect solution! I've been looking for something like this to align multiple separate time-series plots that I can't do with faceting because of the major customization in each plot.
– wahalulu
Jan 20 '13 at 17:47
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Position a CSS background image x pixels from the right?
...ccording to CSS Backgrounds and Borders 3, which is already Candidate Recommendation (standard ready for implementation): w3.org/TR/css3-background/#the-background-position
– Ilya Streltsyn
Jul 2 '13 at 20:37
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The builds tools for v120 (Platform Toolset = 'v120') cannot be found
...dia.org/wiki/Visual_C++
You are using Visual C++ 2012 which is v110. v120 means Visual C++ 2013.
So either you change the project settings to use toolset v110, or you install Visual Studio 2013 on this machine and use VS2013 to compile it.
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How to drop all user tables?
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BEGIN
FOR cur_rec IN (SELECT object_name, object_type
FROM user_objects
WHERE object_type IN
('TABLE',
'VIEW',
'MATERIALIZED VIEW',
...
Rails 2.3-style plugins and deprecation warnings running task in Heroku
I'm upgrading to Rails 3.2, and running rake db:migrate gives me several errors of the form:
8 Answers
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java.lang.RuntimeException: Unable to instantiate activity ComponentInfo
...cation in the android 1.5 emulator , I got these errors....
Any one have some hint..?
42 Answers
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Using column alias in WHERE clause of MySQL query produces an error
...ted, the column value may not yet
be determined.
Copied from MySQL documentation
As pointed in the comments, using HAVING instead may do the work. Make sure to give a read at this WHERE vs HAVING though.
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