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SQL Add foreign key to existing column
If I am using the following SQL command in SQL Server 2008 to update a table with a foreign key constraint:
6 Answers
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Nullable type as a generic parameter possible?
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Change the return type to Nullable<T>, and call the method with the non nullable parameter
static void Main(string[] args)
{
int? i = GetValueOrNull<int>(null, string.Empty);
}
public static Nullable<T> GetValueOrNull<T>(DbDataRecord reader...
How to change legend title in ggplot
I have the following plot like below.
It was created with this command:
12 Answers
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How to deal with INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES without uninstall?
...r developer's machine). Or, the old one is signed with your production key and the new one is signed with your debug key.
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Composite Key with EF 4.1 Code First
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You can mark both ActivityID and ActivityName properties with Key annotation or you can use fluent API as described by @taylonr.
Edit:
This should work - composite key defined with annotations requires explicit column order:
public class ActivityType
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Technically, why are processes in Erlang more efficient than OS threads?
...er to switch context, because they only switch at known, controlled points and therefore don't have to save the entire CPU state (normal, SSE and FPU registers, address space mapping, etc.).
Erlang processes use dynamically allocated stacks, which start very small and grow as necessary. This permits...
Close Bootstrap Modal
...er you can use hidden.bs.modal event you can read more about modal methods and events here in Documentation
If none of the above method work, give a id to your close button and trigger click on close button.
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Qt: How do I handle the event of the user pressing the 'X' (close) button?
...>
void MainWindow::closeEvent (QCloseEvent *event)
{
QMessageBox::StandardButton resBtn = QMessageBox::question( this, APP_NAME,
tr("Are you sure?\n"),
QMessageBox::...
error: default argument given for parameter 1
... to see. If you had to repeat them at the definition it would be redundant and more hassle to maintain. (This is also why I disagree with Yacoby about commenting out the default parameters in the implementation. IME, in real projects such comments will be out of sync with the declaration sooner or l...
how to delete all commit history in github? [duplicate]
... @rraallvv No you cant, it will say: Nothing to compare, master and x branch has entirely different commit history. Pull request on Github become auto closed when you force push
– NoNameProvided
Jan 16 '16 at 9:24
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