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JOIN queries vs multiple queries

...erent keys, often databases (i.e. mysql) can only use one index per table, meaning maybe one of the joins will be fast (and use an index) whereas the others will be extremely slow. For multiple queries, you can optimize the indexes to use for each query. – user151975 ...
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Advantages and disadvantages of GUID / UUID database keys

... ) Edit merged my two answers to this question @Matt Sheppard I think he means that you can duplicate rows with different GUIDs as primary keys. This is an issue with any kind of surrogate key, not just GUIDs. And like he said it is easilly solved by adding meaningfull unique constraints to non-ke...
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Should I put input elements inside a label element?

...e checkbox.</label> Being able to click between label and box means that it is: easier to click less clear where things start and end Bootstrap checkbox v3.3 examples use the input inside: http://getbootstrap.com/css/#forms Might be wise to follow them. But they changed their minds ...
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SVG gradient using CSS

...d if somebody isn't ready to discard a portion of his audience, it doesn't mean that he isn't ready for changes, it means he prefers to leverage the changes later to keep a bigger audience. – Finesse Aug 5 '19 at 13:53 ...
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css label width not taking effect

... Use display: inline-block; Explanation: The label is an inline element, meaning it is only as big as it needs to be. Set the display property to either inline-block or block in order for the width property to take effect. Example: #report-upload-form { background-color: #316091; ...
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HTML5 best practices; section/header/aside/article elements

...ontent. Sounds like a div element, but it’s not. The div has no semantic meaning. Before replacing all your div’s with section elements, always ask yourself: “Is all of the content related?” aside – Used for tangentially related content. Just because some content appears to the left o...
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Build vs new in Rails 3

...eason .build exists is that Firm.first.clients.new might be interpreted to mean that you are creating a new has_many relationship object, rather than an actual client, so calling .build is a way of clarifying this. share ...
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What is the optimal length for an email address in a database?

...ibuted without the outliers (I tested it.) Min: 12 1st quartile: 19 Mean (w/ outliers): 23.04 Mean w/o outliers): 22.79 3rd quartile: 26 Max (w/ outliers): 47 Max (w/o outliers): 35 Median: 23 Mode: 24 Std. Dev (w/ outliers): 5.20 Std. Dev (w/o outliers): 4.70 Ranges based o...
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Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms

...understand it, you need to know which element is being closed. Without any means to "remember" what opening tags you've seen, no chance. Note however that most "regex" libraries actually permit more than just the strict definition of regular expressions. If they can match back-references, then they...
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How to disable HTML button using JavaScript?

...ibute It is an attribute. Some attributes are defined as boolean, which means you can specify their value and leave everything else out. i.e. Instead of disabled="disabled", you include only the bold part. In HTML 4, you should include only the bold part as the full version is marked as a feature...