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Replacing NULL with 0 in a SQL server query
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SELECT ISNULL(myColumn, 0 ) FROM myTable
This will put a 0 in myColumn if it is null in the first place.
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Why does Hibernate require no argument constructor?
...ate instantiates your objects. So it needs to be able to instantiate them. If there isn't a no-arg constructor, Hibernate won't know how to instantiate it, i.e. what argument to pass.
The hibernate documentation says:
4.1.1. Implement a no-argument constructor
All persistent classes must have...
What's the difference between the data structure Tree and Graph?
Academically speaking, what's the essential difference between the data structure Tree and Graph? And how about the tree based search and Graph based search?
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NSPredicate: filtering objects by day of NSDate property
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what if we have only one date?
– Wasim
Sep 14 '11 at 9:55
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Set up a scheduled job?
I've been working on a web app using Django, and I'm curious if there is a way to schedule a job to run periodically.
24 A...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
... approach will use the actual boolean type (and resolve to true and false) if the compiler supports it. (specifically, C++)
However, it would be better to check whether C++ is in use (via the __cplusplus macro) and actually use true and false.
In a C compiler, this is equivalent to 0 and 1.
(note ...
How can I add items to an empty set in python
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How do I concatenate const/literal strings in C?
...t parameter has enough space to store what you're trying to copy into it. If available to you, it is safer to use functions like: strcpy_s and strcat_s where you explicitly have to specify the size of the destination buffer.
Note: A string literal cannot be used as a buffer, since it is a constan...
SQL: How to get the count of each distinct value in a column?
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Java: Multiple class declarations in one file
...her this actually changes between implementations - I highly doubt it, but if you avoid doing it in the first place, you'll never need to care :)
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