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SQL to find the number of distinct values in a column
I can select all the distinct values in a column in the following ways:
11 Answers
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python: SyntaxError: EOL while scanning string literal
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I had this problem - I eventually worked out that the reason was that I'd included \ characters in the string. If you have any of these, "escape" them with \\ and it should work fine.
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Counting array elements in Python [duplicate]
... in an array, because contrary to logic array.count(string) does not count all the elements in the array, it just searches for the number of occurrences of string.
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How do I count unique values inside a list
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This is like a Counter but really inefficient cause most of the counts are thrown away, and list.count() is O(n) anyway. You don't even need to convert aa to list at all. See Vidul's answer instead.
– wjandrea
Sep 2...
What is the difference between MySQL, MySQLi and PDO? [closed]
...ocedural style and the OO one with mysqli.
– Patrick Allaert
Jun 19 '10 at 9:31
@Patrick, thanks. I've corrected this...
Where are the PostgreSQL logs on macOS?
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On OS X, if you're using the EnterpriseDB installation of PostgreSQL, your log files will be in /Library/PostgreSQL/8.4/data/pg_log
Of course, you'll want to substitute 8.4 for whichever version number you're running.
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What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
The 'Wat' talk for CodeMash 2012 basically points out a few bizarre quirks with Ruby and JavaScript.
5 Answers
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You asked me to pull without telling me which branch you want to merge with
...hed by default.
Is there some configuration I can add in order to make all local branches track their remotes properly in the future?
I don't think that there is. When you created bucket-4 locally, as I assume happened, the remote-tracking branch didn't exist, so it can't be set up at that po...
an htop-like tool to display disk activity in linux [closed]
... would report the disk IO activity. Something similar to htop would be really cool. Has someone heard of something like that?
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How can I check a C# variable is an empty string “” or null? [duplicate]
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@Lion Liu: Actually I think PHP has exactly as much to offer. See: php.net/manual/en/function.empty.php
– Milan
Feb 2 '16 at 20:09
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