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How to 'insert if not exists' in MySQL?
...itle is not
possible. But there are several very easy ways to accomplish what is
expected using existing functionality.
There are 3 possible solutions: using INSERT IGNORE, REPLACE, or
INSERT … ON DUPLICATE KEY UPDATE.
Imagine we have a table:
CREATE TABLE `transcripts` (
`ensembl...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
What is the difference between defining View Params like this:
2 Answers
2
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Resync git repo with new .gitignore file
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What's with the single-quotes here?
– IgorGanapolsky
Jun 5 '15 at 15:20
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Matplotlib (pyplot) savefig outputs blank image
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First, what happens when T0 is not None? I would test that, then I would adjust the values I pass to plt.subplot(); maybe try values 131, 132, and 133, or values that depend whether or not T0 exists.
Second, after plt.show() is cal...
How to exclude specific folders or files from validation in Eclipse?
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What about for kinds of file that are not listed in Validation? .less files for example?
– Andrea Scarafoni
Sep 2 '14 at 15:38
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Difference between .keystore file and .jks file
...ontainer of certificates, private keys etc.
There are specifications of what should be the format of this keystore and the predominant is the #PKCS12
JKS is Java's keystore implementation. There is also BKS etc.
These are all keystore types.
So to answer your question:
difference b...
Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
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For what it's worth, I had received the error, "It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level." and ended up resolving it by clearing the \myWebApp\obj\Debug and \my...
Determine if two rectangles overlap each other?
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dont you think you're using the hard constraints? what if the two rectangles overlap each other exactly on there edge? shouldn't you consider <=, >= ??
– Nawshad Farruque
Oct 23 '12 at 23:12
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Convert camelCaseText to Sentence Case Text
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uSBPorts=>U S B Ports, not what I expect, I want a USB Ports
– signonsridhar
Jun 19 '17 at 18:27
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Toggle button using two image on different state
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android:textOn="" android:textOff="" was what i was looking for
– png
Oct 29 '13 at 13:01
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