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How to add pandas data to an existing csv file?
I want to know if it is possible to use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data.
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Does a UNIQUE constraint automatically create an INDEX on the field(s)?
Should I define a separate index on the email column (for searching purposes), or is the index is "automatically" added along with UNIQ_EMAIL_USER constraint?
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bash assign default value
I thought I could use this feature to write ${LONG_VARIABLE_NAME:=hello} instead of the longer LONG_VARIABLE_NAME=${LONG_VARIABLE_NAME:-hello} , but now bash also tries to execute 'hello' and that gives a command not found. Any way to avoid that? Or will I have to stick to the latter? Can someone...
IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
When I try to make a simple module in IntelliJ it responds with:
6 Answers
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Postgresql: Conditionally unique constraint
I'd like to add a constraint which enforces uniqueness on a column only in a portion of a table.
2 Answers
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Rails - controller action name to string
I have a Rails question.
6 Answers
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How do I detect what .NET Framework versions and service packs are installed?
A similar question was asked here , but it was specific to .NET 3.5. Specifically, I'm looking for the following:
13 Answe...
Android:What is difference between setFlags and addFlags for intent
What is difference between setFlags and addFlags for intent. Could any one explain it please.
Help Appreciated.
3 Answers
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Force HTML5 youtube video
Regarding the Youtube API Blog they are experimenting with their new HTML5 Video Player.
5 Answers
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SQL Server: converting UniqueIdentifier to string in a case statement
We have a log table that has a message column that sometimes has an exception stack trace. I have some criteria that determines if the message has this. We do not want to show these messages to the customer but instead have a message like:
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