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SQL Server dynamic PIVOT query?
...T_SQL_STRING = 'SELECT top 1 STUFF((SELECT distinct '', '' + CAST(''[''+CONVERT(VARCHAR,'+ @PIVOT_COLUMN+')+'']'' AS VARCHAR(50)) [text()]
FROM '+@TABLE+'
WHERE ISNULL('+@PIVOT_COLUMN+','''') <> ''''
FOR XM...
ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...y people think that it would be smart to encapsulate ADO.NET functionality into a DB-Class(me too 10 years ago). Mostly they decide to use static/shared objects since it seems to be faster than to create a new object for any action.
That is neither a good idea in terms of peformance nor in terms of...
AJAX POST and Plus Sign ( + ) — How to Encode?
...
Use encodeURIComponent(str) and decodeURIComponent(str). Escape will not convert the characters, only escape them with \'s
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Why use getters and setters/accessors?
... functionality (like validation) to be added more easily later.
Hiding the internal representation of the property while exposing a property using an alternative representation.
Insulating your public interface from change - allowing the public interface to remain constant while the implementation c...
What happens to global and static variables in a shared library when it is dynamically linked?
...olution (I work a lot with visual studio!). These modules are either built into *.lib or *.dll or the *.exe itself.
2 Answe...
while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
Intrigued by this question about infinite loops in perl: while (1) Vs. for (;;) Is there a speed difference? , I decided to run a similar comparison in python. I expected that the compiler would generate the same byte code for while(True): pass and while(1): pass , but this is actually not the c...
Comparing object properties in c# [closed]
...,
typeof(Guid)
}.Contains(type) ||
(Convert.GetTypeCode(type) != TypeCode.Object);
}
public static Type GetUnderlyingType(this MemberInfo member)
{
switch (member.MemberType)
{
case MemberTypes.Event:
...
Insert, on duplicate update in PostgreSQL?
...h ON CONFLICT clause. with the following syntax (similar to MySQL)
INSERT INTO the_table (id, column_1, column_2)
VALUES (1, 'A', 'X'), (2, 'B', 'Y'), (3, 'C', 'Z')
ON CONFLICT (id) DO UPDATE
SET column_1 = excluded.column_1,
column_2 = excluded.column_2;
Searching postgresql's email...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
... you bind data
controls directly to data-access methods, and automatically convert
user input to and from .NET Framework data types.
Support for unobtrusive JavaScript in client-side validation scripts.
Improved handling of client script through bundling and minification
for improved page performanc...
How to get error message when ifstream open fails
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In MSVC, e.what() always prints the same message "iostream stream error"
– rustyx
Aug 11 '16 at 11:11
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