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How can I return pivot table output in MySQL?
...w.artfulsoftware.com/infotree/qrytip.php?id=78
I advise reading this post and adapt this solution to your needs.
Update
After the link above is currently not available any longer I feel obliged to provide some additional information for all of you searching for mysql pivot answers in here. It rea...
How do I use a custom deleter with a std::unique_ptr member?
...
Assuming that create and destroy are free functions (which seems to be the case from the OP's code snippet) with the following signatures:
Bar* create();
void destroy(Bar*);
You can write your class Foo like this
class Foo {
std::unique_...
Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
...ary/92t2ye13.aspx) for a list of objects that needs to be iterated through and modified, List<> for a list of objects that needs to be iterated through, modified, sorted, etc (See here for a full list: http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx).
From a more specific standpoint, la...
Pointers in C: when to use the ampersand and the asterisk?
I'm just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, string...
LINQ Select Distinct with Anonymous Types
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Have a read through K. Scott Allen's excellent post here:
And Equality for All ... Anonymous Types
The short answer (and I quote):
Turns out the C# compiler overrides
Equals and GetHashCode for anonymous
types. The implementation of the two
overridden methods uses all the...
PostgreSQL “DESCRIBE TABLE”
... equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)?
22 Answers
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c++ 代码调用nsis安装包实现静默安装 - 脚本技术 - 清泛IT社区，为创新赋能！
TCHAR szCurPath[MAX_PATH] = {0};
GetCurrentDirectory(MAX_PATH, szCurPath);
TCHAR szFile[MAX_PATH] = {0};
_stprintf_s(szFile, MAX_PATH, _T("%s\\setup.exe"), szCurPath);
CString szPath = szFile;
CString szCmdline = _T("");
CString szWorking;
szWorking = szPath.Mid( 0, szPath.Reve...
LEFT OUTER JOIN in LINQ
...ay to do that with where clause?
Correct problem:
For inner join is easy and I have a solution like this
22 Answers
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HTML: Include, or exclude, optional closing tags?
...unless I have a very good reason not to) because it lends to more readable and updateable code.
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What is the logic behind the “using” keyword in C++?
...aration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typedef-name. It has the same semantics as if it were
introduced by the typedef specifier. In particular, it does not define
a new type and ...