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How do I convert an interval into a number of hours with postgres?
... SELECT EXTRACT(epoch FROM my_interval/3600) (interval has native 'divide integer' support, result is interval, and extract result is integer, not float). So. Autocast/Floor done.
– Offenso
Aug 12 '15 at 13:24
...
How can I define a composite primary key in SQL?
...te primary key. It is defined as follows:
CREATE TABLE voting (
QuestionID NUMERIC,
MemberID NUMERIC,
PRIMARY KEY (QuestionID, MemberID)
);
The pair (QuestionID,MemberID) must then be unique for the table and neither value can be NULL. If you do a query like this:
SELECT * FROM voting WHER...
In Maven 2, how do I know from which dependency comes a transitive dependency?
...
To add to @David Crow, here's a dependency:tree example from the Maven site:
mvn dependency:tree -Dincludes=velocity:velocity
might output
[INFO] [dependency:tree]
[INFO] org.apache.maven.plugins:maven-dependency-plugin:maven-plugin:2....
How do I convert from stringstream to string in C++?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
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how to make svn diff show only non-whitespace line changes between two revisions
...
Because EOL may be considered whitespace as well, adding -x --ignore-eol-style might be necessary if EOL style is different between revisions.
– nedim
Apr 27 '15 at 14:09
...
jQuery empty() vs remove()
... empty the selection of its contents and remove the selection itself.
Consider:
<div>
<p><strong>foo</strong></p>
</div>
$('p').empty(); // --> "<div><p></p></div>"
// whereas,
$('p').remove(); // --> "<div></div>"...
How to redirect from OnActionExecuting in Base Controller?
...Response.Redirect() which does nothing, as well as calling a new method inside of the Base Controller that returns an ActionResult and have it return RedirectToAction()... neither of these work.
...
Inline instantiation of a constant List
...stead. And if you want the list to be immutable then you might want to consider using ReadOnlyCollection<T> rather than List<T>.
private static readonly ReadOnlyCollection<string> _metrics =
new ReadOnlyCollection<string>(new[]
{
SourceFile.LOC,
...
Strip Leading and Trailing Spaces From Java String
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
How to stop Visual Studio from opening a file on single click?
...self, one of the buttons at the top toggles it.
– David Mason
Sep 22 '12 at 9:12
28
Just wanted t...