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MySQL, better to insert NULL or empty string?

...ifferent fields. Some of the fields are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data? ...
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Spring 3 RequestMapping: Get path value

Is there a way to get the complete path value after the requestMapping @PathVariable values have been parsed? 10 Answer...
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Best way to store a key=>value array in JavaScript?

What's the best way to store a key=>value array in javascript, and how can that be looped through? 7 Answers ...
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Is there a “not in” operator in JavaScript for checking object properties?

Is there any sort of "not in" operator in JavaScript to check if a property does not exist in an object? I couldn’t find anything about this around Google or Stack Overflow. Here’s a small snippet of code I’m working on where I need this kind of functionality: ...
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In Windows cmd, how do I prompt for user input and use the result in another command?

I have a Windows .bat file which I would like to accept user input and then use the results of that input as part of the call to additional commands. ...
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Sequelize.js delete query?

Is there a way to write a delete/deleteAll query like findAll? 9 Answers 9 ...
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How do I configure Maven for offline development?

Does maven require a connection to the internet at some point to be able to use it? Meaning specifically getting the internal maven plugins for compiling, cleaning, packaging, etc? ...
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ruby on rails f.select options with custom attributes

... Rails CAN add custom attributes to select options, using the existing options_for_select helper. You almost had it right in the code in your question. Using html5 data-attributes: <%= f.select :country_id, options_for_select( @countries.map{ |c| [c.name, c.id, {'data-cu...
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How can I decrease the size of Ratingbar?

In my activity I have some Rating bars. But the size of this bar is so big! How can I make it smaller? 16 Answers ...
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Pass Array Parameter in SqlCommand

I am trying to pass array parameter to SQL commnd in C# like below, but it does not work. Does anyone meet it before? 12 A...