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Using group by on multiple columns
...ons, and this is the order that they must be set, otherwise you can get an error.
Aggregate Functions are:
MIN returns the smallest value in a given column
SUM returns the sum of the numeric values in a given column
AVG returns the average value of a given column
COUN...
How to get Locale from its String representation in Java?
..., String country)
Here is a sample code :)
// May contain simple syntax error, I don't have java right now to test..
// but this is a bigger picture for your algo...
public String localeToString(Locale l) {
return l.getLanguage() + "," + l.getCountry();
}
public Locale stringToLocale(String ...
Unable to install Maven on Windows: “JAVA_HOME is set to an invalid directory”
...
ERROR: JAVA_HOME is set to an invalid directory. JAVA_HOME = "E:\Sun\SDK\jdk\bin" Please set the JAVA_HOME variable in your environment to match the location of your Java installation
JAVA_HOME should be set to E:\Sun\SDK\j...
SQL update from one Table to another based on a ID match
...As well as being standard SQL and thus more portable it also will raise an error in the event of there being multiple joined rows on the source side (and thus multiple possible different values to use in the update) rather than having the final result be undeterministic.
MERGE INTO Sales_Import
...
Uses for the Java Void Reference Type?
... to write utility classes with a constructor as private Void() { throw new Error(); }. Some may prefer a no-value enum.
– Tom Hawtin - tackline
Nov 4 '11 at 21:32
...
dropping infinite values from dataframes in pandas?
...
I am getting this error - TypeError: ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''
– John
yes...
What does ^M character mean in Vim?
...into an open terminal with vi running will result in a "pattern not found" error.
– IQAndreas
Oct 9 '13 at 13:14
53
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What is the significance of #pragma marks? Why do we need #pragma marks?
...example, it does not add categories for methods, nor generate any warnings/errors.
EDIT
#pragma is a preprocessor directive which comes from C programming language. Its purpose is to specify implementation-dependent information to the compiler - that is, each compiler might choose to interpret thi...
Jenkins / Hudson environment variables
...different path so this was helpful. Also, we don't get the LD_LIBRARY_PATH errors we used to get with Oracle client and Jenkins.
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How to check if variable is string with python 2 and 3 compatibility
...nd without relying on packages like six, is:
try:
basestring
except NameError:
basestring = str
then, assuming you've been checking for strings in Python 2 in the most generic manner,
isinstance(s, basestring)
will now also work for Python 3+.
...