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Is there any difference between GROUP BY and DISTINCT
...hat the two operations "happen" at two very different steps in the logical order of operations that are executed in a SELECT statement.
Here are the most important operations:
FROM (including JOIN, APPLY, etc.)
WHERE
GROUP BY (can remove duplicates)
Aggregations
HAVING
Window functions
SELECT
DI...
Get controller and action name from within controller?
For our web application I need to save the order of the fetched and displayed items depending on the view - or to be precise - the controller and action that generated the view (and the user id of course, but that's not the point here).
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What does a type followed by _t (underscore-t) represent?
...mes i, j, and k for temporary loop variables.
In code where word-size and ordering is important, it's very common to use custom defined types that are explicit, such as BYTE WORD (normally 16-bit) DWORD (32-bits).
int_t is not so good, because the definition of int varies between platforms -- s...
How to fix the flickering in User controls
...d accessing their DoubleBuffered property and then we change it to true in order to make each control on the form double buffered. The reason we do reflection here, is because imagine you have a control that has child controls that are not accessible, that way, even if they're private controls, we'l...
Executing elements inserted with .innerHTML
...he src property will be downloaded asynchronously and executed as arrived. Ordering is not preserved. Inline scripts will also be executed out-of-order, synchronously before the async ones.
– robert4
Feb 11 '16 at 22:30
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Performance of Find() vs. FirstOrDefault() [duplicate]
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Praying for the day C# gets higher order types
– ditoslav
Mar 2 '18 at 12:05
1
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What is the “realm” in basic authentication
I'm setting up basic authentication on a php site and found this page on the php manual showing the set up. What does "realm" mean here in the header?
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Postgresql SELECT if string contains
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shouldn't be the order of aaaa and tag_name reversed? i mean that you should put a column name after where
– user151496
May 11 '15 at 15:10
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What is the equivalent of 'describe table' in SQL Server?
... from information_schema.columns
where table_name = 'aspnet_Membership'
order by ordinal_position
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Removing event listener which was added with bind
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constructor(props){
super(props);
// it's a trick! needed in order to overcome the remove event listener
this.onChange = this.onChange.bind(this);
}
// then as regular...
componentDidMount (){
AppStore.addChangeListener(this.onChange);
}
componentWillUnmo...