Cloudflare Developers•3y ago

Right, for the experimental backend: 1. all queries run inside a transaction 2. You can’t enable fo

Right, for the experimental backend:

all queries run inside a transaction
You can’t enable foreign keys via the PRAGMA inside that context
We are making foreign key enforcement the default
You can relax it with
```
PRAGMA defer_foreign_keys = on
```
PRAGMA defer_foreign_keys = on
```
PRAGMA defer_foreign_keys = on
```
PRAGMA defer_foreign_keys = on
Docs coming very very soon

MMatt Silverlock Right, for the experimental backend: 1. all queries run inside a transaction 2....

micromashor•7/20/23, 8:17 PM

Thank you! I'm glad this is on the radar and coming soon.

Mmicromashor Thank you! I'm glad this is on the radar and coming soon.

Matt SilverlockOP•7/20/23, 8:39 PM

WIP docs: https://silverlock-d1-foreign-keys.cloudflare-docs-7ou.pages.dev/d1/learning/foreign-keys/

Need to write up FK actions, add basic schema examples (how to define fkeys between tables), and how to handle errors/resolve FK issues - before I publish it proper.

Original message was deleted

Max (@rozenmd)•7/21/23, 2:54 PM

just realised we pretty much never actually want to set a default value in the form based on the field's sql default value, since it needs to be NULL for sqlite to use the default value

Braden•7/22/23, 12:14 AM

Looking to integrate honeycomb.io with d1 to get traces of db queries in my logs. Anyone already done something like this?

Tony Leung•7/22/23, 1:27 PM

hi guys, I'm having two table documentdocument and document_typedocument_type and documentdocument has a foreign key of document_typedocument_type. documentdocument is a relatively large table and document_typedocument_type has 10 or 20 records. What should I do when I want to get data from both tables, using JOIN or SELECT two times and use code to get the final data?

TTony Leung hi guys, I'm having two table `document` and `document_type` and `document` has ...

Lucian•7/22/23, 3:24 PM

I say use a JOIN, that is what it's intended for. No need to JOIN datasets "in code", databases engines are optimized to handle joins efficiently.

LLucian I say use a JOIN, that is what it's intended for. No need to JOIN datasets "in ...

Tony Leung•7/22/23, 3:58 PM

Thank you! Is this applied to SQLite? I'm using D1 btw

Tony Leung•7/22/23, 4:48 PM

Thank you! I'm kinda new with SQLite

Ashley•7/22/23, 9:36 PM

I know read replicas are coming soon, so assume currently there is just a leader being created, but what happens if the DC the leader is in goes down? I assume right now the DB would be inaccessible... but in future, would a new leader be elected in the event a region/DC goes down where a D1 database's leader is?

AAshley I know read replicas are coming soon, so assume currently there is just a leader...

Matt SilverlockOP•7/23/23, 7:02 AM

This is already the case. We run the leader from another data center in the same region implicitly.

MMatt Silverlock This is already the case. We run the leader from another data center in the same...

Ashley•7/23/23, 8:51 AM

Awesome, thank you!

VViper How do we connect to D1 using pages or A Nodejs framework like Nextjs?

Matt SilverlockOP•7/23/23, 9:30 AM

https://developers.cloudflare.com/pages/framework-guides/ and https://developers.cloudflare.com/d1/examples/

D1 is just like KV

Framework guides · Cloudflare Pages docs

Documentation for Cloudflare Pages, the best way to deploy your static and JAMstack sites

Examples · Cloudflare D1 docs

Query your D1 database from a Remix application.

VViper I don't get it, how would you access the database without the wrangler.toml file...

Matt SilverlockOP•7/23/23, 10:40 AM

The guides show you how to bind a database using Pages.

VViper I don't get it, how would you access the database without the wrangler.toml file...

Matt SilverlockOP•7/23/23, 10:40 AM

(I strongly suggest following one of the Pages tutorials first)

VViper I don't think it works the same way with Nextjs I tried setting my database in t...

Cyb3r-Jak3•7/23/23, 1:10 PM

Are you passing a D1 binding with your pages dev command?

chientrm.com•7/23/23, 2:39 PM

should I switch to new D1 backend?

chientrm.com•7/23/23, 2:39 PM

it doesn't have back up yet

Mozzy•7/23/23, 3:06 PM

Screw backups, live on the Edge (of your seat)

Cchientrm.com it doesn't have back up yet

Cyb3r-Jak3•7/23/23, 3:26 PM

Time travel is available d1-database

Hyper•7/23/23, 7:58 PM

i switched my production database to d1 and were finally live on the edge (of my seat)

MrJeeves•7/23/23, 10:45 PM

hmm... this doesn't seem right...

trying to use db within a pages function works locally but dead in prod for me. anything im missing?

MrJeeves•7/23/23, 10:46 PM

i did forget to add the binding, but also did a new deploy after adding it to preview env

Walshy•7/23/23, 10:49 PM

what does "dead" mean in this context?

Are you trying to use it in a prod deploy? If so, you'll want it in the Production tab too

MrJeeves•7/23/23, 10:50 PM

umm no was just missing the binding in context, but turns out i was still using the last deploy's url

Walshy•7/23/23, 10:50 PM

haha that'll do it

MrJeeves•7/23/23, 10:50 PM

completely user error

ajgeiss0702•7/24/23, 3:04 AM

I've been experimenting with D1 on and off now for a few months. A few months ago I had set up a database, and it was working perfectly fine. I took a few months off of that project and worked on some other things. I've now come back to that project with D1 and now this request to D1 is failing and im not sure why. Any ideas?

  (error) Error: D1_ERROR
    at D1Database._send (functionsWorker-0.5813307969025092.js:11813:13)
    at async D1PreparedStatement.first (functionsWorker-0.5813307969025092.js:11858:7)
    at async default (functionsWorker-0.5813307969025092.js:6789:45)
    at async handle_action_json_request (functionsWorker-0.5813307969025092.js:8923:19)
    at async resolve (functionsWorker-0.5813307969025092.js:11347:22)
    at async Object.handle (functionsWorker-0.5813307969025092.js:389:24)
    at async respond (functionsWorker-0.5813307969025092.js:11243:22)
    at async Object.fetch (functionsWorker-0.5813307969025092.js:11715:13)

  (error) Error: D1_ERROR
    at D1Database._send (functionsWorker-0.5813307969025092.js:11813:13)
    at async D1PreparedStatement.first (functionsWorker-0.5813307969025092.js:11858:7)
    at async default (functionsWorker-0.5813307969025092.js:6789:45)
    at async handle_action_json_request (functionsWorker-0.5813307969025092.js:8923:19)
    at async resolve (functionsWorker-0.5813307969025092.js:11347:22)
    at async Object.handle (functionsWorker-0.5813307969025092.js:389:24)
    at async respond (functionsWorker-0.5813307969025092.js:11243:22)
    at async Object.fetch (functionsWorker-0.5813307969025092.js:11715:13)

ajgeiss0702•7/24/23, 3:06 AM

nevermind. turned out to be a structure migration that replaced something that it shouldnt have, causing an invalid SQL statement. Would be nice to have better errors though (at least an "invalid SQL statement" would have turned this from a 5 minute investigation to about 30 seconds

)

VViper No I set it thru the site

Cyb3r-Jak3•7/24/23, 12:09 PM

That only works in production. From the docs

Pass the --d1=BINDING_NAME flag when developing locally. BINDING_NAME should match what call in your code

Bram•7/24/23, 3:01 PM

Hi all, even though D1 is in alpha, I am considering using it for a new startup (hoping D1 would be beta around the time the MVP is ready). Worst case scenario is that I would have to migrate to another database before official launch (to avoid migration headaches early on). BUT I would need JS transactions. Is there any insight / timeline into the complexity of this feature? How likely will it be delayed? Is it the next focus, or are there other major changes / features coming first? I understand this is hard to answer, so "We don't know" is perfectly valid too of course!

ScottF•7/24/23, 3:01 PM

Has there been any indication when D1 will move from public alpha to public beta? I noticed it was on the roadmap in the last blog post but they didnt mention timing. Would love to plan my team's next solution around SQLite and I feel like D1 has the best DX out of all the available options. Just hard to sell it when there's all the alpha disclaimers everywhere.

BBram Hi all, even though D1 is in alpha, I am considering using it for a new startup ...

micromashor•7/24/23, 4:10 PM

JS transactions

support for SQL transactions in the JS API? if so, look into db.batchdb.batch (https://developers.cloudflare.com/d1/platform/client-api/#batch-statements)

D1 client API · Cloudflare D1 docs

As part of our Client API, both static and prepared statements are supported. Best practice is to use prepared statements which are precompiled …

Mmicromashor > JS transactions support for SQL transactions in the JS API? if so, look into `...

Bram•7/24/23, 4:24 PM

I would love to integrate D1 with kysely, according to the author of kysely-d1, integrating with the batchbatch API is not feasible for this

see: https://github.com/aidenwallis/kysely-d1/issues/2#issuecomment-1327869881

GitHub

Transactions support · Issue #2 · aidenwallis/kysely-d1

Transactions are not currently supported in D1. Once they are, this package needs support added for them.

Farhian•7/25/23, 1:40 AM

Hi all, is there a way to restore a D1 from a backup? I have 2 databases - one has some data and the other is empty. I am trying to copy all the data from the first to the second. I was hoping that I could export a backup from the first one (which I was able to do) and then use the restore on the second (and hope to 'clone' the first it into the second - including structure and data)

FFarhian Hi all, is there a way to restore a D1 from a backup? I have 2 databases - one h...

Catt0s•7/25/23, 2:32 AM

cloudflare has built in backups on experimental backend.
edit: i was confused, backups are normal, time travel is on experimental

FFarhian Hi all, is there a way to restore a D1 from a backup? I have 2 databases - one h...

Catt0s•7/25/23, 2:33 AM

try this https://developers.cloudflare.com/d1/learning/importing-data/

Importing data · Cloudflare D1 docs

D1 allows you to import existing SQLite tables and their data directly, enabling you to migrate existing data into D1 quickly and easily. This can be …

CCatt0s try this https://developers.cloudflare.com/d1/learning/importing-data/

Farhian•7/25/23, 1:17 PM

Thanks! I'll have a look. I knew about the Backup function, I just could not find the Import from an external backup.

micromashor•7/25/23, 3:32 PM

wrangler.toml

wrangler.toml

, why do we need to specify database_namedatabase_name? it seems redundant, given that you specify the database ID

micromashor•7/25/23, 3:32 PM

(could also be a question for #wrangler , just lmk and ill move this over there)

Mmicromashor in `wrangler.toml`, why do we need to specify `database_name`? it seems redundan...

Max (@rozenmd)•7/25/23, 4:19 PM

it probably wasn't well thought out tbh

Max (@rozenmd)•7/25/23, 4:19 PM

much like how we have envs in wrangler.toml but also preview_database_id

kian•7/25/23, 4:32 PM

At least D1 doesn't error if you don't specify a preview_preview_ :^)

Kkian At least D1 doesn't error if you don't specify a `preview_` :^)

Hyper•7/25/23, 7:02 PM

yeah with r2 i had to specify a preview for any env that is not at the top level configuration of wrangler.toml

Right, for the experimental backend: 1. all queries run inside a transaction 2. You can’t enable fo

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