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How do I set a column value to NULL in SQL Server Management Studio?
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Use This:
Update Table Set Column = CAST(NULL As Column Type) where Condition
Like This:
Update News Set Title = CAST(NULL As nvarchar(100)) Where ID = 50
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How to run Unix shell script from Java code?
It is quite simple to run a Unix command from Java.
17 Answers
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Reading Excel files from C#
...looked it up on MSDN. Looks like the <T> is just used to attempt to cast the contents in the column to a type. In this example and just casting the data in the columns to strings. If you wanted a double you would need to call double.Parse(x.Field<string>("Cost") or something like that...
Force line-buffering of stdout when piping to tee
...p tee output.txt
(-p is for pipeline mode where unbuffer reads from stdin and passes it to the command in the rest of the arguments)
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No module named MySQLdb
I am using Python version 2.5.4 and install MySQL version 5.0 and Django. Django is working fine with Python, but not MySQL. I am using it in Windows Vista.
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Oracle Differences between NVL and Coalesce
...you can find a difference in the fact that NVL makes an implicit data type casting if the given values are of different types. So for instance, I was getting an error using COALESCE passing it two NULL values (one explicitly set and the other taken from a column in the database, of type NUMBER), tha...
Changing the current working directory in Java?
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i don't think i've found a single difference between java and c# that makes me think, "those java guys sure know what they're doing"
– Jake
Feb 22 '12 at 21:05
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Thread context switch Vs. process context switch
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The main distinction between a thread switch and a process switch is that during a thread switch, the virtual memory space remains the same, while it does not during a process switch.
Both types involve handing control over to the operating system kernel to perform the ...
How can I pass a member function where a free function is expected?
...n using a void* interface as they remove the potential for errors due to a cast to the wrong type.
To clarify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), void* context) {
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Java - Method name collision in interface implementation
...Something2 ) are expected ? I cannot even expect client code to be able to cast my instance to the appropriate interface , so am I not loosing something by this restriction ? Also note that in this way , when writing classes that actually implement the respective interfaces , we loose the benefit of...