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What are the use cases for selecting CHAR over VARCHAR in SQL?
...the word "FooBar"
CHAR(6) = 6 bytes (no overhead)
VARCHAR(100) = 8 bytes (2 bytes of overhead)
CHAR(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same length (within two characters length difference).
Note: Microsoft SQL...
How can I get Knockout JS to data-bind on keypress instead of lost-focus?
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<body>
<p>First name: <input data-bind="value: firstName, valueUpdate: ...
iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
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edited Jan 24 '19 at 19:55
Greg Brown
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mysql -> insert into tbl (select from another table) and some default values [duplicate]
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You simply have to do:
INSERT INTO def (catid, title, page, publish)
SELECT catid, title, 'p...
How to get line count of a large file cheaply in Python?
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Pair/tuple data type in Go
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edited Mar 13 '18 at 10:29
Ivan Aracki
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Label encoding across multiple columns in scikit-learn
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PyLint, PyChecker or PyFlakes? [closed]
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How to automatically reload a page after a given period of inactivity
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If you want to refresh the page if there is no activity then you need to figure out how to def...
Visual Studio: How can I see the same file in two separate tab groups?
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You can open the file in another tab (Window -> New Window).
Doing so you have two copies...