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must appear in the GROUP BY clause or be used in an aggregate function
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Yes, this is a common aggregation problem. Before SQL3 (1999), the selected fields must appear in the GROUP BY clause[*].
To workaround this issue, you must calculate the aggregate in a sub-query and then join it with itself to get the additional columns you'd need to show:
SEL...
Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
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198
The problem is that there are several different time functions available in C and C++, and som...
Why not abstract fields?
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105
You can do what you described by having a final field in your abstract class that is initialis...
Creating a blurring overlay view
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561
You can use UIVisualEffectView to achieve this effect. This is a native API that has been fine-t...
What is the exact difference between currentTarget property and target property in javascript
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451
Basically, events bubble by default so the difference between the two is:
target is the elemen...
How to run multiple .BAT files within a .BAT file
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16 Answers
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Get a random boolean in python?
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Adam's answer is quite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost spe...
Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
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Usage:
layout = new ThreeLayout(this, 3);
layout.setAnimationDuration(1000);
setContentView(layout);
layout.getLeftView(); //<---inflate FragmentA here
layout.getMiddleView(); //<---inflate FragmentB here
layout.getRightView(); //<---inflate FragmentC here
//Left Animation set
layo...
What is & used for
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130
& is HTML for "Start of a character reference".
&amp; is the character reference for ...
Outputting data from unit test in python
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14 Answers
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