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General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

No minimum age requirement for the question. Getting older is relative to you, and you can answer for any age or period of life.

What have you noticed about getting older? Could be about yourself; about others; about the world.

Partly posting this because I love those little nuggets of local lore, and partly so I can share this local fact that I just discovered.

My city's cathedral has this amazing double-bowl copper font (different angle here) which I had assumed was ancient - the cathedral is almost 1000 years old - but it turns out that until 1994 these bowls were being used at a local chocolate factory to make caramel to go inside Rolos and was gifted to the church when the factory closed.

Ever since I moved to a place with an airport nearby, I've been wondering about those flight deal sites -- the ones like Scott's Cheap Flights, Mighty Travels, Thrifty Traveler, Faredrop, Secret Flying, Dollar Flight Club, etc (those are just the ones I found off a Reddit thread on r/TravelHacks).
Has anyone here had any experience with these paid services?

Also, does anyone know of a way I can search for a start and end point, and find other airports nearby to fly out of for much cheaper? I remember having used such a site earlier but cannot for the life of me remember its name now :-(

This is a recurring post to discuss programming or other technical projects that we've been working on. Tell us about one of your recent projects, either at work or personal projects. What's interesting about it? Are you having trouble with anything?

This topic is part of a series. It is meant to be a place for users to discuss creative projects they have been working on.

Projects can be personal, professional, physical, digital, or even just ideas.

If you have any creative projects that you have been working on or want to eventually work on, this is a place for discussing those.

I currently have a Lenovo N42 Chromebook far past it's EoL, for which Google is no longer supporting it. I have put Chrome OS Flex on it by reflashing the bios, and it's pretty solid, but I have no internal audio. Bluetooth audio and HDMI works fine, but no headphones, and no speakers.

I found this solution for trying to hack in an Alsa configuration from an Ubuntu Live Disk (https://www.reddit.com/r/chromeos/comments/swzxsy/comment/irk5kqk/) and I was able to follow the instructions and enable development mode, but when I try to run the alsaconfig script, I get this.

crosh> shell
chronos@localhost / $ sudo alsarestore
No state is present for card chtrt5650
/usr/sbin/alsactl: sysfs_init:48: sysfs path '/sys' is invalid

Found hardware: "chtrt5650" "" "" "" ""
Hardware is initialized using a generic method
No state is present for card chtrt5650

It may have something to do with those instructions being for a different build computer, but I am outside my sphere of knowledge, and anything else I could troubleshoot would be appreciated. Internal audio isn't mission critical for me, but it would be appreciated.