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Select first row in each GROUP BY group?
...set of expressions in DISTINCT ON, but you can rearrange order among those freely. Example.
You can add additional expressions to ORDER BY to pick a particular row from each group of peers. Or, as the manual puts it:
The DISTINCT ON expression(s) must match the leftmost ORDER BY
expression(s). The ...
PHP validation/regex for URL
...urce code where references to some flags have been removed entirely. More info here: news.php.net/php.internals/99018
– S. Imp
May 12 '17 at 21:53
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Database Structure for Tree Data Structure
...incur additional overhead when writing to the structure.
3) What types of information do you need to obtain from the structure - some structures excel at providing certain kinds of information about the structure. Examples include finding a node and all its children, finding a node and all its pare...
Capture keyboardinterrupt in Python without try-except
...en re-raises that exception. But you could do this differently.)
For more info see:
Official documentation on atexit
The Python Module of the Week post, a good intro
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Postgresql - change the size of a varchar column to lower length
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For more information about how this works check out dba.stackexchange.com/questions/189890/…
– Evan Carroll
Jan 24 '18 at 17:57
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How to create a HashMap with two keys (Key-Pair, Value)?
... access level, due to the fact they are final and do not contain sensitive information. I'm not a 100% sure whether private access level works correctly in any case when casting the Object to a Key.
If you wonder about the finals, I declare anything as final which value is set on instancing and nev...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
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Updated my answer with additional info about how to prevent security vulnerability.
– Kaspars Ozols
Apr 22 '14 at 9:48
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How to detect orientation change?
...dObserver to a viewDidLoad in my first view it worked perfectly. Just for information if anyone comes across the same issue.
– FractalDoctor
Nov 14 '14 at 10:46
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Does PostgreSQL support “accent insensitive” collations?
... AS VALUES ('fóó bar baz'),('qux quz');
-- No index required, but feel free to create one
CREATE INDEX ON myTable
USING GIST (to_tsvector('mydict', myCol));
You can now query it very simply
SELECT *
FROM myTable
WHERE to_tsvector('mydict', myCol) @@ 'foo & bar'
mycol
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IntelliJ beginning of file keyboard shortcut
...tion+down will provide page up and page down behaviour. Superuser has more information.
Also, if you open the Keyboard preferences pane and look at the Input Sources tab, you will find that the displayed keyboard changes as you press modifier keys such shift, option and function. Your keyboard prob...