Files
beanflows/transform/sqlmesh_materia/models/serving/obt_commodity_metrics.sql
Deeman 08e74665bb feat(extract): add OpenWeatherMap daily weather extractor
Adds extract/openweathermap package with daily weather extraction for 8
coffee-growing regions (Brazil, Vietnam, Colombia, Ethiopia, Honduras,
Guatemala, Indonesia). Feeds crop stress signal for commodity sentiment score.

Extractor:
- OWM One Call API 3.0 / Day Summary — one JSON.gz per (location, date)
- extract_weather: daily, fetches yesterday + today (16 calls max)
- extract_weather_backfill: fills 2020-01-01 to yesterday, capped at 500
  calls/run with resume cursor '{location_id}:{date}' for crash safety
- Full idempotency via file existence check; state tracking via extract_core

SQLMesh:
- seeds.weather_locations (8 regions with lat/lon/variety)
- foundation.fct_weather_daily: INCREMENTAL_BY_TIME_RANGE, grain
  (location_id, observation_date), dedup via hash key, crop stress flags:
  is_frost (<2°C), is_heat_stress (>35°C), is_drought (<1mm), in_growing_season

Landing path: LANDING_DIR/weather/{location_id}/{year}/{date}.json.gz

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-02-25 22:40:27 +01:00

126 lines
3.2 KiB
SQL

MODEL (
name serving.commodity_metrics,
kind INCREMENTAL_BY_TIME_RANGE (
time_column ingest_date
),
start '2006-08-01',
cron '@daily'
);
/* CTE to calculate country-level derived metrics */
WITH country_metrics AS (
SELECT
commodity_code,
commodity_name,
country_code,
country_name,
market_year,
ingest_date,
Production,
Imports,
Exports,
Total_Distribution,
Ending_Stocks,
(
Production + Imports - Exports
) AS Net_Supply, /* Derived metrics per country, mirroring Python script */
(
Exports - Imports
) AS Trade_Balance,
(
Production + Imports - Exports
) - Total_Distribution AS Supply_Demand_Balance,
(
Ending_Stocks / NULLIF(Total_Distribution, 0)
) /* Handle division by zero for Stock-to-Use Ratio */ * 100 AS Stock_to_Use_Ratio_pct,
(
Production - LAG(Production, 1, 0) OVER (PARTITION BY commodity_code, country_code ORDER BY market_year, ingest_date)
) /* Calculate Production YoY percentage change using a window function */ / NULLIF(
LAG(Production, 1, 0) OVER (PARTITION BY commodity_code, country_code ORDER BY market_year, ingest_date),
0
) * 100 AS Production_YoY_pct
FROM cleaned.psdalldata__commodity_pivoted
), global_aggregates AS (
SELECT
commodity_code,
commodity_name,
NULL::TEXT AS country_code, /* Use NULL for global aggregates */
'Global' AS country_name,
market_year,
ingest_date,
SUM(Production) AS Production,
SUM(Imports) AS Imports,
SUM(Exports) AS Exports,
SUM(Total_Distribution) AS Total_Distribution,
SUM(Ending_Stocks) AS Ending_Stocks
FROM cleaned.psdalldata__commodity_pivoted
GROUP BY
commodity_code,
commodity_name,
market_year,
ingest_date
), global_metrics /* CTE to calculate derived metrics for global aggregates */ AS (
SELECT
commodity_code,
commodity_name,
country_code,
country_name,
market_year,
ingest_date,
Production,
Imports,
Exports,
Total_Distribution,
Ending_Stocks,
(
Production + Imports - Exports
) AS Net_Supply,
(
Exports - Imports
) AS Trade_Balance,
(
Production + Imports - Exports
) - Total_Distribution AS Supply_Demand_Balance,
(
Ending_Stocks / NULLIF(Total_Distribution, 0)
) * 100 AS Stock_to_Use_Ratio_pct,
(
Production - LAG(Production, 1, 0) OVER (PARTITION BY commodity_code ORDER BY market_year, ingest_date)
) / NULLIF(
LAG(Production, 1, 0) OVER (PARTITION BY commodity_code ORDER BY market_year, ingest_date),
0
) * 100 AS Production_YoY_pct
FROM global_aggregates
)
/* Combine country-level and global-level data into a single output */
SELECT
commodity_code,
commodity_name,
country_code,
country_name,
market_year,
ingest_date,
Production,
Imports,
Exports,
Total_Distribution,
Ending_Stocks,
Net_Supply,
Trade_Balance,
Supply_Demand_Balance,
Stock_to_Use_Ratio_pct,
Production_YoY_pct
FROM (
SELECT
*
FROM country_metrics
UNION ALL
SELECT
*
FROM global_metrics
) AS combined_data
ORDER BY
commodity_name,
country_name,
market_year,
ingest_date