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IN vs OR in the SQL WHERE Clause
... your specific data to see which is faster.
I tried both on a MySQL with 1000000 rows. When the column is indexed there is no discernable difference in performance - both are nearly instant. When the column is not indexed I got these results:
SELECT COUNT(*) FROM t_inner WHERE val IN (1000, 2000, ...
Refresh all files in buffer from disk in vim
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answered Aug 13 '09 at 13:40
pmfpmf
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Pushing from local repository to GitHub hosted remote
I created a local repository of my Visual Studio 2010 solution folder using Git GUI on my dev machine. I then created a remote repository in my GitHub account. Now, I am looking for how to push my local repository to the remote repository.
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Is there a Java standard “both null or equal” static method?
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edited Jun 20 at 9:12
Community♦
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answered Feb 20 '12 at 15:31
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Android: TextView automatically truncate and replace last 3 char of String
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answered Nov 3 '09 at 13:28
NateNate
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Swapping two variable value without using third variable
...mory locations (rather than different values). This is because (p xor p) = 0 and if both x and y share the same memory location, when one is set to 0, both are set to 0.
When both *x and *y are 0, all other xor operations on *x and *y will equal 0 (as they are the same), which means that the functio...
Ruby on Rails: getting the max value from a DB column
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answered Feb 11 '11 at 21:07
Dylan MarkowDylan Markow
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How to convert BigDecimal to Double in Java?
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You need to use the doubleValue() method to get the double value from a BigDecimal object.
BigD...
Measuring function execution time in R
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In Git, what is the difference between origin/master vs origin master?
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406
There are actually three things here: origin master is two separate things, and origin/master i...