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With MySQL, how can I generate a column containing the record index in a table?
... @Mike: That's true. And that's probably neater as well. Thanks for sharing this tip.
– Daniel Vassallo
Jun 27 '10 at 21:55
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What's wrong with using == to compare floats in Java?
According to this java.sun page == is the equality comparison operator for floating point numbers in Java.
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Query for documents where array size is greater than 1
I have a MongoDB collection with documents in the following format:
13 Answers
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Calculate a Running Total in SQL Server
...ented SQL Server implementation detail (also if the query ends up being performed by two procs I wonder what will happen, see: MAXDOP):
Full working sample:
drop table #t
create table #t ( ord int primary key, total int, running_total int)
insert #t(ord,total) values (2,20)
-- notice the mali...
Why doesn't Java allow generic subclasses of Throwable?
...d SomeException<String> are erased to the same type, there is no way for the JVM to distinguish the exception instances, and therefore no way to tell which catch block should be executed.
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Kill a Process by Looking up the Port being used by it from a .BAT
In Windows what can look for port 8080 and try to kill the process it is using through a .BAT file?
14 Answers
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Difference between @OneToMany and @ElementCollection?
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I believe @ElementCollection is mainly for mapping non-entities (embeddable or basic) while @OneToMany is used to map entities. So which one to use depend on what you want to achieve.
sha...
Update statement with inner join on Oracle
...ds if the inline view is considered updateable by Oracle
( To be updatable for the second statement depends on some rules listed
here ).
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How to remove padding around buttons in Android?
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For me the problem turned out to be minHeight and minWidth on some of the Android themes.
On the Button element, add:
<Button android:minHeight="0dp" android:minWidth="0dp" ...
Or in your button's style:
<item name...
What is event bubbling and capturing?
...element inside another element, and both elements have registered a handle for that event. The event propagation mode determines in which order the elements receive the event.
With bubbling, the event is first captured and handled by the innermost element and then propagated to outer elements.
Wit...