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Remove duplicate rows in MySQL
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A really easy way to do this is to add a UNIQUE index on the 3 columns. When you write the ALTER statement, include the IGNORE keyword. Like so:
ALTER IGNORE TABLE jobs
ADD UNIQUE INDEX idx_name (site_id, title, company);
This will drop all the duplicate rows. As an added benefit...
Is there a way to get rid of accents and convert a whole string to regular letters?
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394
Use java.text.Normalizer to handle this for you.
string = Normalizer.normalize(string, Normal...
Why does setTimeout() “break” for large millisecond delay values?
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This is due to setTimeout using a 32 bit int to store the delay so the max value allowed would be
2147483647
if you try
2147483648
you get your problem occurring.
I can only presume this is causing some form of internal exception in the JS Engine and...
How to add a progress bar to a shell script?
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39 Answers
39
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How to combine two or more querysets in a Django view?
...rch for a Django site I am building, and in that search, I am searching in 3 different models. And to get pagination on the search result list, I would like to use a generic object_list view to display the results. But to do that, I have to merge 3 querysets into one.
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How to modify a specified commit?
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3092
You can use git rebase. For example, if you want to modify commit bbc643cd, run
$ git rebase...
Is there an equivalent of 'which' on the Windows command line?
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2623
Windows Server 2003 and later (i.e. anything after Windows XP 32 bit) provide the where.exe prog...
How can I read and parse CSV files in C++?
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37 Answers
37
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MySQL “Group By” and “Order By”
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