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Why does MYSQL higher LIMIT offset slow the query down?
...e improvement. If there is no index usable by ORDER BY or the index covers all fields you need, you don't need this workaround.
– Quassnoi
Nov 24 '11 at 18:13
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What good are SQL Server schemas?
... 2005+. Yes, I know the basic definition of a schema, but what are they really used for in a typical SQL Server deployment?
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Table Naming Dilemma: Singular vs. Plural Names [closed]
...t wanted to add this... Is it possible that "User" (or "Users") is not actually a full description of the data held in the table? Not that you should get too crazy with table names and specificity, but perhaps something like "Widget_Users" (where "Widget" is the name of your application or website) ...
Copy all files with a certain extension from all subdirectories
Under unix, I want to copy all files with a certain extension (all excel files) from all subdirectories to another directory. I have the following command:
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Converting a Pandas GroupBy output from Series to DataFrame
...1.index
Out[20]:
MultiIndex([('Alice', 'Seattle'), ('Bob', 'Seattle'), ('Mallory', 'Portland'),
('Mallory', 'Seattle')], dtype=object)
Perhaps you want something like this?
In [21]: g1.add_suffix('_Count').reset_index()
Out[21]:
Name City City_Count Name_Count
0 Alice S...
Viewing full version tree in git
...
You can try the following:
gitk --all
You can tell gitk what to display using anything that git rev-list understands, so if you just want a few branches, you can do:
gitk master origin/master origin/experiment
... or more exotic things like:
gitk --simp...
php check if array contains all array values from another array
I would like to find out if $all contains all $search_this values and return true or false. any idea please?
5 Answers
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What is the difference between the bridge pattern and the strategy pattern?
...n UML
Strategy Pattern in Swift:
protocol PrintStrategy {
func print(_ string: String) -> String
}
class Printer {
let strategy: PrintStrategy
init(strategy: PrintStrategy) {
self.strategy = strategy
}
func print(_ string: String) -> String {
return self.strateg...
How to know when UITableView did scroll to bottom in iPhone
...st way is to test a point at the bottom of the screen and use this method call when ever the user scrolls (scrollViewDidScroll):
- (NSIndexPath *)indexPathForRowAtPoint:(CGPoint)point
Test a point near the bottom of the screen, and then using the indexPath it returns check if that indexPath is th...
MySQL remove all whitespaces from the entire column
Is there a way to remove all whitespaces from a specific column for all values?
5 Answers
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