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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
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So, you have a
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
java.net.ConnectException: Connection refused
I'm quoting from this answer which also contains a step-by-step MySQL+JDBC tutorial:
If you ...
What's the fastest way to do a bulk insert into Postgres?
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PostgreSQL has a guide on how to best populate a database initially, and they suggest using the COPY command for bulk loading rows. The guide has some other good tips on how to speed up the process, like removing indexes and foreig...
Select Row number in postgres
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importing pyspark in python shell
...bject.
Your script can therefore have something like this:
from pyspark.sql import SparkSession
if __name__ == "__main__":
if spark_main_opts:
# Set main options, e.g. "--master local[4]"
os.environ['PYSPARK_SUBMIT_ARGS'] = spark_main_opts + " pyspark-shell"
# Set spark ...
Where does Console.WriteLine go in ASP.NET?
...e a look at this for more info: http://damieng.com/blog/2008/07/30/linq-to-sql-log-to-debug-window-file-memory-or-multiple-writers
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Is there a .NET equivalent to Apache Hadoop? [closed]
...its alternative (Dryad) in favor of Hadoop.
Next year they will release MS SQL Server 2012 with Hadoop integration. Azure and Windows Sever support is being developed even as we speak.
It will be available in the first half in 2012.
Hadoop is the #1 BigData platform and is going to be supported by o...
Should a .sln be committed to source control?
... @Edison: Nope. I'm referring to auto generated source files like LINQ to SQL data context, for instance.
– Mehrdad Afshari
Jun 23 '09 at 17:06
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How to dump a dict to a json file?
...d from here:
http://www.anthonydebarros.com/2012/03/11/generate-json-from-sql-using-python/
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How do I add indices to MySQL tables?
I've got a very large MySQL table with about 150,000 rows of data. Currently, when I try and run
7 Answers
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Calculate date from week number
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@Muflix I don't know enough about SQL and dates/calendars to know - but doing CLR will work.
– Mikael Svenson
Dec 15 '15 at 8:42
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