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MySQL: Set user variable from result of query
...w can we define a variable in mysql
To define a varible in mysql
it should start with '@' like @{variable_name} and this '{variable_name}', we can replace it with our variable name.
Now, how to assign a value in a variable in mysql. For this we have many ways to do that
Using keyword 'SET'.
Examp...
Is effective C++ still effective?
From what I saw in this post I decided to start reading the book Effective C++ .
3 Answers
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Purging file from Git repo failed, unable to create new backup
...mmand eg. HEAD -f. Seeing your command made me try putting the flag at the start, and it worked! =D
– Cardin
Jun 20 '11 at 0:02
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What's the difference between “static” and “static inline” function?
...ould be useful information to have. You could probably find when gcc first started optimizing out unused static functions/objects by looking at the history of attribute((used)) and its use to allow asm to reference otherwise-unreferenced static functions and data.
– R.. GitHub ...
Why is my Spring @Autowired field null?
... beans are created in the
application context of Spring when server is started. But when we create objects
using new operator the object is not registered in application context which is already created. For Example Employee.java class i have used.
Check this out:
public class Configure...
Android Studio needs JDK 7 for Android-L mac
...tents/Home
in JDK settings solved my issue. I had the same problem getting started up. Hope this helps!
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In Python, how do I create a string of n characters in one line of code?
..."one line"? You can fit anything onto one line.
Assuming you want them to start with 'a', and increment by one character each time (with wrapping > 26), here's a line:
>>> mkstring = lambda(x): "".join(map(chr, (ord('a')+(y%26) for y in range(x))))
>>> mkstring(10)
'abcdefghij...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...ed one that could be written on paper in an exam or interview, I would not start making a lookup table by hand and making the program to do it would already include a different solution (which would be simpler alone than the one including both it and the table).
– Arkku
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Rails: How can I set default values in ActiveRecord?
...Doing this with associations will eager load those associations on lookup. Start initialize with return if !new_record? to avoid performance issues.
– Kyle Macey
Apr 2 '13 at 15:01
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Sorting data based on second column of a file
...ere is defined as a whitespace delimited field; the argument -k5 will sort starting with the fifth field in each line, not the fifth character in each line)
-n - this option specifies a "numeric sort" meaning that column should be interpreted as a row of numbers, instead of text.
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