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PostgreSQL: insert from another table

... to insert data to a table from another table and the tables have only one column in common. The problem is, that the TABLE1 has columns that won't accept null values so I can't leave them empty and I can't get them from the TABLE2. ...
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Comparing Timer with DispatcherTimer

what is a difference between System.Windows.Forms.Timer() and System.Windows.Threading.DispatcherTimer() ? In which cases, we should use them? any best practices ? ...
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What is the difference between `after_create` and `after_save` and when to use which?

Are after_create and after_save the same as per functionality? 3 Answers 3 ...
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Raise warning in Python without interrupting program

I am trying to raise a Warning in Python without making the program crash / stop / interrupt. 3 Answers ...
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How to invert a grep expression

The following grep expression successfully lists all the .exe and .html files in the current directory and sub directories. ...
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How to set web.config file to show full error message

I deployed my MVC-3 application on windows Azure. But now when I am requesting it through staging url it shows me (Sorry, an error occurred while processing your request.) . Now I want to see the full error message, by default it is hiding that because of some security reasons. I know that we can...
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Variable interpolation in the shell

I have a variable called filepath=/tmp/name . 3 Answers 3 ...
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Passing a Bundle on startActivity()?

What's the correct way to pass a bundle to the activity that is being launched from the current one? Shared properties? 6 A...
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How do I wrap link_to around some html ruby code?

How do I wrap a link around view code? I can't figure out how to pass multiple lines with ruby code to a single link_to method. The result I am looking for is that you click the column and get the show page: ...
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MySQL: Set user variable from result of query

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