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SQL Server IN vs. EXISTS Performance
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EXISTS will be faster because once the engine has found a hit, it will quit looking as the condition has proved true.
With IN, it will collect all the results from the sub-query before further processing.
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What's the use of session.flush() in Hibernate
When we are updating a record, we can use session.flush() with Hibernate. What's the need for flush() ?
9 Answers
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Drawable image on a canvas
How can I get an image to the canvas in order to draw on that image?
6 Answers
6
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Iterate through every file in one directory
How do I write a loop in ruby so that I can execute a block of code on each file?
8 Answers
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Enable remote MySQL connection: ERROR 1045 (28000): Access denied for user
MySQL 5.1.31 running on Windows XP.
12 Answers
12
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How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
How can I install Google Play Services in a Genymotion emulator with no drag and drop support?
17 Answers
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ALTER TABLE without locking the table?
... ALTER TABLE statement in MySQL, the whole table is read-locked (allowing concurrent reads, but prohibiting concurrent writes) for the duration of the statement. If it's a big table, INSERT or UPDATE statements could be blocked for a looooong time. Is there a way to do a "hot alter", like adding a c...
What is the difference between concurrency and parallelism?
What is the difference between concurrency and parallelism?
37 Answers
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Fork and synchronize Google Code Subversion repository into GitHub
How can I fork and keep in sync with an Google Code Subversion repository that I don't have write access to, into a GitHub repository?
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What is Ad Hoc Query?
...g a book about SQL. In that book there's the term Ad Hoc Query , which I don't understand.
10 Answers
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