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MySQL Optimization: EXPLAIN Extra column contains Using Where Nullable columns do have overhead, because of the extra need to check for the null condition if a column doesn't have to be null, or your requirements don't allow for null, then definitely make the column not null As for the indexes, depends on the index construction If the index is defined with (a,b,c) and you're using b,c in your where clause, this index cannot be used as a is not in play
Can pip. conf specify two index-url at the same time? I have tried using pip with index-url in pip conf However, i can not make sure that we can get all the necessary python library So, i want to know if pip support specify more than one index-url
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How does loggings extra argument work? - Stack Overflow I am struggling to figure out exactly how the extra argument for logging works I have some legacy code I need to change which uses it, and the code also requires logging to stdout import logging
pip requirements. txt with alternative index - Stack Overflow 88 Add an extra index location to the requirements file just before the package project name: --extra-index-url <Extra URLs other than index-url> <some_project_name> Alternatively, you may use -i or --index-url <Base URL of the Python Package Index> Refer: requirements file format
Python is adding extra newline to the output - Stack Overflow The other way to do it is to leave the original newline, and just avoid printing an extra one While you can do this by writing to sys stdout with sys stdout write(line), you can also do it from print itself If you just add a comma to the end of the print statement, instead of printing a newline, it adds a "smart space"
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