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Add a column to a table, if it does not already exist
...ry for MS SQL Server that adds a column into a table. But I don't want any error display, when I run/execute the following query.
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What's is the difference between include and extend in use case diagram?
...when certain criteria are met.
a typical example: between login and show error message (only happened sometimes)
(login) <--- << extend >> --- (show error message)
"show error message" only happens sometimes when the login process failed.
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Installing SciPy and NumPy using pip
... Installing libblas-dev liblapack-dev resolved blas but then I got error: library dfftpack has Fortran sources but no Fortran compiler found so I needed all these to be able to install scipy. Thank you.
– naoko
Aug 16 '15 at 0:37
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Converting strings to floats in a DataFrame
...pd.to_numeric(s)
s = pd.Series(['apple', '1.0', '2', -3])
pd.to_numeric(s, errors='ignore')
pd.to_numeric(s, errors='coerce')
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How to check SQL Server version
...ific instance of SQL Server.
Method 3: Look at the first few lines of the Errorlog file for that instance. By default, the error log is located at Program Files\Microsoft SQL Server\MSSQL.n\MSSQL\LOG\ERRORLOG and ERRORLOG.n files. The entries may resemble the following:
2011-03-27 22:31:33.50 Serv...
Why does @foo.setter in Python not work for me?
...t;
File "/devel/class_test.py", line 6, in x
return self._x
AttributeError: 'testDec' object has no attribute '_x'
>>> k.x = 5
called setter
>>> k.x
called getter
5
>>>
Another detail that might cause problems is that both methods need the same name for the proper...
Multiple arguments to function called by pthread_create()?
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@sigjuice, It doesn't work for me. I see compilation error: invalid conversion from ‘void*’ to ‘arg_struct*’.
– Neshta
Oct 15 '14 at 17:17
add a ...
How can I format my grep output to show line numbers at the end of the line, and also the hit count?
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your solution seems fine but get an error awk95: syntax error at source line context is >>> ' <<< missing } awk95: bailing out at source line 1
– London
Oct 19 '10 at 12:27
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Gradle does not find tools.jar
...Files\Java\jre8\bin. If we look in there, there is no Tools.jar, hence the error.
You need to find where the JDK is, in my case: D:\Program Files\Java\jdk1.8.0_11, and if you look in the lib directory, you will see Tools.jar.
What I did I created a new environment variable JAVA_HOME:
And then y...
How does Go compile so quickly?
...rd to prevent the parser from ever being the piece of code that reports an error. Parsers generally do a poor job of reporting coherent error messages. Here, you create a parse tree for the expression as though aType is a variable reference, and later in the semantic analysis phase when you find out...