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PostgreSQL DISTINCT ON with different ORDER BY
...ion
So you'll have to add the address_id to the order by.
Alternatively, if you're looking for the full row that contains the most recent purchased product for each address_id and that result sorted by purchased_at then you're trying to solve a greatest N per group problem which can be solved by t...
How to drop multiple columns in postgresql
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Javascript Object push() function
...ar tempData = [];
for ( var index=0; index<data.length; index++ ) {
if ( data[index].Status == "Valid" ) {
tempData.push( data );
}
}
data = tempData;
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express.js - single routing handler for multiple routes in a single line
... array can be done easily, but the side-effects are possibly unpredictable if you're hoping to pick up anything useful from the path that was used by way of params or capture groups. It's probably more useful for redundancy/aliasing, in which case it'll work very well.
Edit: Please also see @c24w's...
cannot load such file — zlib even after using rvm pkg install zlib
...e trying to do something routine.
The solution is to use rvm. Use it even if you only need one version of ruby. Why? Because then you can do
rvm requirements
This will probe your particular OS and produce a set of commands you can copy back to the command line to install those missing packages.
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image processing to improve tesseract OCR accuracy
...y pixellated - for example that generated by fax machines - is especially difficult for tesseract to process - presumably all those jagged edges to the characters confound the shape-recognition algorithms.
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How to escape the % (percent) sign in C's printf?
... your example:
printf("hello%%");
Escaping '%' sign is only for printf. If you do:
char a[5];
strcpy(a, "%%");
printf("This is a's value: %s\n", a);
It will print: This is a's value: %%
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jquery sortable placeholder height problem
...ceholder for my sortable items is about 10px. All my sortable items have different heights. How can I change the height of each placeholder to match the item being moved?
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Named routes _path vs _url
...st use the path part of the URL with the *_path helper. On the other hand, if the URL is to be consumed outside of your site, e.g. an email or an RSS feed, the whole URL is needed, so use the *_url helper.
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Is there an equivalent to 'continue' in a Parallel.ForEach?
...condition used for continue on all items until the end of the foreach
if (isTrue)
{
//Do what you want to do for all items
}
});
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