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Cannot add or update a child row: a foreign key constraint fails
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must appear in the GROUP BY clause or be used in an aggregate function
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Yes, this is a common aggregation problem. Before SQL3 (1999), the selected fields must appear...
Connect to a heroku database with pgadmin
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Open the "Properties" of the Heroku server in pgAdminIII and change the "Maintenance DB" value ...
install / uninstall APKs programmatically (PackageManager vs Intents)
...that this installerPackage was only added fairly recently to the platform (2.2?) and was originally not actually used for tracking who installed the app -- it is used by the platform to determine who to launch when reporting bugs with the app, for implementing Android Feedback. (This was also one o...
How can I get enum possible values in a MySQL database?
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Font Awesome not working, icons showing as squares
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What is “lifting” in Scala?
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There are a few usages:
PartialFunction
Remember a PartialFunction[A, B] is a function defin...
jquery UI dialog: how to initialize without a title bar?
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Join a list of strings in python and wrap each string in quotation marks
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answered Aug 17 '12 at 14:28
jamylakjamylak
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Having both a Created and Last Updated timestamp columns in MySQL 4.0
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From the MySQL 5.5 documentation:
One TIMESTAMP column in a table can have the current time...