:on-delete :cascade

[tonsky]

• Optimize current on-delete impl
• Transform it into single recursive query
• Add delete-entity support to client datalog
• Add option to the explorer
• Add option to CLI schema file

[github-actions]

View Vercel preview at instant-www-js-optimize-cascade-delete-jsv.vercel.app.

[tonsky]

Progress so far:

• Wrote a bench for recursive delete
• Optimized delete-entity-multi!

[tonsky]

To the best of my abilities, I made cascade expansion as a single query but it still sometimes triggers slow path.

One of the culprits, I think, is [:= [:to_jsonb :entity_id] :value] join. This could be sped up by introducing value_ref column that contains parsed uuid. Might benefit many other places, too, anywhere where we need to follow a reference, in fact.

I left a TODO, maybe plan it as a separate task?

[tonsky]

Okay I think store.js support for cascade is in, + tests

[dwwoelfel]

LGTM!

[stopachka]

So cool!