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Hidden Features of SQL Server
...velopers still don't seem to know about the OUTPUT clause (SQL Server 2005 and newer) on the DELETE, INSERT and UPDATE statement.
It can be extremely useful to know which rows have been INSERTed, UPDATEd, or DELETEd, and the OUTPUT clause allows to do this very easily - it allows access to the "vir...
What is null in Java?
...e value of the RelationalExpression is not null and the reference could be cast to the ReferenceType without raising a ClassCastException. Otherwise the result is false.
This means that for any type E and R, for any E o, where o == null, o instanceof R is always false.
What set does 'null' b...
Convert Base64 string to an image file? [duplicate]
...ata. The actual base64 data comes after that.
Just strip everything up to and including base64, (before calling base64_decode() on the data) and you'll be fine.
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ReadOnlyCollection or IEnumerable for exposing member collections?
...If you're using .NET 3.5, you can avoid making a copy and avoid the simple cast by using a simple call to Skip:
public IEnumerable<Foo> Foos {
get { return foos.Skip(0); }
}
(There are plenty of other options for wrapping trivially - the nice thing about Skip over Select/Where is that t...
How do I mount a remote Linux folder in Windows through SSH? [closed]
...m admin/shell programming class. Although ssh works fine for executing commands like ls, pwd, etc editors do not work well with my screen reader and an ssh session. I was wondering if it is possible to mount a Linux folder over ssh so it appears as a windows drive? This way I could edit any files I ...
Does MS SQL Server's “between” include the range boundaries?
... When using BETWEEN to filter DateTimes between two dates, you can also cast the DateTime to a Date, eg: where CONVERT(DATE, MyDate) BETWEEN '2017-09-01' and '2017-09-30' This approach makes the time element of the DateTime irrelevant
– Pete
Sep 15 '17 at 9...
How to select date without time in SQL
...
Use CAST(GETDATE() as date) that worked for me, simple.
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constant pointer vs pointer on a constant value [duplicate]
...is constant and immutable but the pointed data is not.
You could use const_cast(in C++) or c-style cast to cast away the constness in this case as data itself is not constant.
const char * a;
means that the pointed data cannot be written to using the pointer a.
Using a const_cast(C++) or c-style ...
Conversion failed when converting date and/or time from character string while inserting datetime
...re are many formats supported by SQL Server - see the MSDN Books Online on CAST and CONVERT. Most of those formats are dependent on what settings you have - therefore, these settings might work some times - and sometimes not.
The way to solve this is to use the (slightly adapted) ISO-8601 date form...
Enum “Inheritance”
... int values to the constants as defined in the existing enum, then you can cast between the enum and the constants, e.g:
public enum SomeEnum // this is the existing enum (from WSDL)
{
A = 1,
B = 2,
...
}
public class Base
{
public const int A = (int)SomeEnum.A;
//...
}
public c...