feat: expand dbt models

dbt/models/intermediate/int_funda_listings_enriched.sql

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+-- Intermediate model: enrich each listing with its most recent asking price
+-- and the last recorded sold price from the price history.
+
+with listings as (
+    select * from {{ ref('stg_funda_listings') }}
+),
+
+price_history as (
+    select * from {{ ref('stg_funda_price_history') }}
+),
+
+latest_asking as (
+    select distinct on (global_id)
+        global_id,
+        price as latest_asking_price,
+        price_date as latest_asking_date
+    from price_history
+    where
+        price_source = 'Funda'
+        and price_status = 'asking_price'
+    order by global_id asc, price_date desc
+),
+
+latest_sold as (
+    select distinct on (global_id)
+        global_id,
+        price as sold_price,
+        price_date as sold_date
+    from price_history
+    where price_status = 'sold'
+    order by global_id asc, price_date desc
+),
+
+enriched as (
+    select
+        l.*,
+        la.latest_asking_price,
+        la.latest_asking_date,
+        ls.sold_price,
+        ls.sold_date,
+        ls.sold_price is not null as is_sold
+    from listings as l
+    left join latest_asking as la on l.global_id = la.global_id
+    left join latest_sold as ls on l.global_id = ls.global_id
+)
+
+select * from enriched

dbt/models/intermediate/int_funda_listings_enriched.yml

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+version: 2
+
+models:
+  - name: int_funda_listings_enriched
+    description: >
+      Listings joined with the most recent asking price and last sold price from price history. One
+      row per listing.
+    meta:
+      dagster:
+        group: funda
+    columns:
+      - name: global_id
+        description: Funda internal listing ID.
+        tests:
+          - unique
+          - not_null
+      - name: latest_asking_price
+        description: Most recent asking price from Funda price history.
+      - name: latest_asking_date
+        description: Date of the most recent asking price event.
+      - name: sold_price
+        description: Price at which the listing was sold, if applicable.
+      - name: sold_date
+        description: Date the listing was sold, if applicable.
+      - name: is_sold
+        description: True when a sold price event exists for this listing.