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Count(*) vs Count(1) - SQL Server
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There is no difference.
Reason:
Books on-line says "COUNT ( { [ [ ALL | DISTINCT ] expression ] | * } )"
"1" is a non-null expression: so it's the same as COUNT(*).
The optimizer recognizes it for what it is: trivial.
The same as EXISTS (SELECT * ... or EXISTS (SELECT 1 ...
Example:
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Expand a div to fill the remaining width
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The solution to this is actually very easy, but not at all obvious. You have to trigger something called a "block formatting context" (BFC), which interacts with floats in a specific way.
Just take that second div, remove the float, and give it overfl...
How can I get clickable hyperlinks in AlertDialog from a string resource?
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Then, I'm getting error Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
– ViliusK
Dec 8 '16 at 13:08
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AngularJS: How to run additional code after AngularJS has rendered a template?
...service, it updates the model in the $scope, and re-renders the template. All good so far.
12 Answers
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Domain Driven Design: Domain Service, Application Service
... I also inject repositories into that domain service? Some info would be really helpful.
8 Answers
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Do I need elements in persistence.xml?
...k at the Chapter2. Setup and configuration too for more details.
EDIT: Actually, If you don't mind not being spec compliant, Hibernate supports auto-detection even in Java SE. To do so, add the hibernate.archive.autodetection property:
<persistence-unit name="eventractor" transaction-type="RESOUR...
How can I determine the URL that a local Git repository was originally cloned from?
...re several forks on GitHub, and I neglected to note which one I took originally. How can I determine which of those forks I pulled?
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rvm installation not working: “RVM is not a function”
I just installed RVM, but can't make it work. I have such line at the end of my .profile file:
21 Answers
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Why am I suddenly getting a “Blocked loading mixed active content” issue in Firefox?
... main page is served over HTTPS. When an HTTPS page has HTTP content, we call that content “mixed”. The webpage that the user is visiting is only partially encrypted, since some of the content is retrieved unencrypted over HTTP. The Mixed Content Blocker blocks certain HTTP requests on HTTPS p...
Optimal number of threads per core
... want to run some process in the minimum amount of time. The process is ideally parallelizable, so I can run chunks of it on an infinite number of threads and each thread takes the same amount of time.
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