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Postgres: SQL to list table foreign keys
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Ollyc's answer is good as it is not Postgres-specific, however, it breaks down when the foreign key references more than one column. The following query works for arbitrary number of columns but it relies heavily on Postgres extensions:
select
att2.attname as "child_column",
cl.relname a...
How do you pass a function as a parameter in C?
... single reference to using a typedef for function pointers? Sorry, have to down-vote.
– Jonathon Reinhart
Oct 1 '14 at 8:03
3
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How do I get the coordinates of a mouse click on a canvas element?
...st canvas = document.querySelector('canvas')
canvas.addEventListener('mousedown', function(e) {
getCursorPosition(canvas, e)
})
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How to create a zip archive of a directory in Python?
... the zipped archive will be named zipfile_name.zip. If base_dir is farther down from root_dir it will exclude files not in the base_dir, but still archive the files in the parent dirs up to the root_dir.
I did have an issue testing this on Cygwin with 2.7 - it wants a root_dir argument, for cwd:
m...
Why would you use Oracle database? [closed]
...us - Oracle or the rest of the world. After that you can narrow the choice down by:
platform (windows-only or not)
weight (sqlite, MySQL, PostgreSQL, ...)
budget (initial license cost, maintenance + support cost)
evolution perspectives, for example:
Oracle Express -> Oracle
SQL Server Express...
Triggering HTML5 Form Validation
...e will work in pretty much any common browser (I've tested it successfully down to IE11).
Here's a working CodePen example.
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Cryptic “Script Error.” reported in Javascript in Chrome and Firefox
...p in our Ajax logger) in Firefox, but in Chrome, we were able to narrow it down to...
Drum roll...
The auto translate feature of Google Chrome.
Many English speaking people probably do not even know about this feature, but to test it, I guess visit a non-English site using Chrome. Or better yet, ...
How to pick an image from gallery (SD Card) for my app?
... situation, as you can also then use the Options and inSampleSize field to downsample large images and avoid memory problems.
However, things like Google Drive return URIs to images which have not actually been downloaded yet. Therefore you need to perform the getContentResolver() code on a backgro...
How to check if element is visible after scrolling?
I'm loading elements via AJAX. Some of them are only visible if you scroll down the page. Is there any way I can know if an element is now in the visible part of the page?
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Best documentation for Boost:asio?
...t you could use google translate which is pretty readable (I had to follow down this path myself).
http://gwenael-dunand.developpez.com/tutoriels/cpp/boost/asio/
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