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Select first row in each GROUP BY group?
As the title suggests, I'd like to select the first row of each set of rows grouped with a GROUP BY .
17 Answers
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Iterating over all the keys of a map
Is there a way to get a list of all the keys in a Go language map? The number of elements is given by len() , but if I have a map like:
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How to enable LogCat/Console in Eclipse for Android?
...w-> Show View -> Other -> Android-> Logcat.
Logcat is nothing but a console of your Emulator or Device.
System.out.println does not work in Android. So you have to handle every thing in Logcat. More Info Look out this Documentation.
Edit 1: System.out.println is working on Logcat. If you...
Negative matching using grep (match lines that do not contain foo)
I have been trying to work out the syntax for this command:
3 Answers
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Reset all changes after last commit in git
How can I undo every change made to my directory after the last commit, including deleting added files, resetting modified files, and adding back deleted files?
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What does preceding a string literal with “r” mean? [duplicate]
I first saw it used in building regular expressions across multiple lines as a method argument to re.compile() , so I assumed that r stands for RegEx.
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How do I change the string representation of a Python class? [duplicate]
...va, I can override the toString() method of my class. Then Java's print function prints the string representation of the object defined by its toString() . Is there a Python equivalent to Java's toString() ?
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How to sort the files according to the time stamp in unix? [closed]
How to sort the files according to the time stamp in unix?
I need to sort the files and also based on time they created.
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Check whether a value is a number in JavaScript or jQuery [duplicate]
I want to check misCharge is number or not. Is there any method or easy way in jQuery or JavaScript to do this?
3 Answers...
CREATE TABLE IF NOT EXISTS equivalent in SQL Server [duplicate]
CREATE TABLE IF NOT EXISTS works on mysql but fails with SQL Server 2008 R2.
What is the equivalent syntax?
1 Answer
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