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Aggregate function in an SQL update query?
...st in the doc to get why FROM is considered by PostgreSQL as a self-join : https://www.postgresql.org/docs/9.5/static/sql-update.html#AEN89239
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Looking for files NOT owned by someone
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How to find out which JavaScript events fired?
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How to save an image locally using Python whose URL address I already know?
... and dump the binary content to a file.
import os
import requests
url = 'https://apod.nasa.gov/apod/image/1701/potw1636aN159_HST_2048.jpg'
page = requests.get(url)
f_ext = os.path.splitext(url)[-1]
f_name = 'img{}'.format(f_ext)
with open(f_name, 'wb') as f:
f.write(page.content)
...
What is the exact meaning of Git Bash?
...files from the days of DOS and early versions of Windows.
REFERENCES:
https://en.wikipedia.org/wiki/Bash_(Unix_shell)
https://en.wikipedia.org/wiki/Windows_PowerShell
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How to implement a many-to-many relationship in PostgreSQL?
...rename tables using serial primary key columns
Auto increment table column
https://www.2ndquadrant.com/en/blog/postgresql-10-identity-columns/
I highly recommend that, because the name of a product is hardly unique (not a good "natural key"). Also, enforcing uniqueness and referencing the column in...
Sharing link on WhatsApp from mobile website (not application) for Android
...id, WhatsApp web, IOS etc.
You just need to use this format:
<a href="https://api.whatsapp.com/send?phone=whatsappphonenumber&text=urlencodedtext"></a>
UPDATE-- Use this from now(Nov-2018)
<a href="https://wa.me/whatsappphonenumber/?text=urlencodedtext"></a>
U...
Postgresql query between date ranges
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Haskell error parse error on input `='
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Purpose of ESI & EDI registers?
... there is no guarantee of them not being used by the C library functions.
https://www.amazon.com/Assembly-Language-Step-Step-Programming/dp/0470497025
See section 12.8 How C sees Command-Line Arguments.
Note that 64-bit calling conventions are different from 32-bit calling conventions, and I am n...