I'm having trouble writing a query that solves the following problem, which I believe needs some kind of recursiveness:
I have a table with houses
, each of them having a specific house_type, p.e. house, bungalow, etc. The house_types inherit from each other, also declared in a table called house_types
.
table: houses
id | house_type
1 | house
2 | bungalow
3 | villa
etcetera...
table: house_types
house_type | parent
house | null
villa | house
bungalow | villa
etcetera...
In this logic, a bungalow is also a villa and a villa is also house. So when I want to get all villas, house 2 and 3 should show up, when I want to get all houses, house 1, 2 and 3 should show up, when I want all bungalows, only house 3 should show up.
Is a recursive query the answer and how should I work this out. I use knex
/objection.js
in a node.js
application.
via Mats de Swart
No comments:
Post a Comment