Put back files
This commit is contained in:
139
inventory-server/scripts/metrics-new/update_periodic_metrics.sql
Normal file
139
inventory-server/scripts/metrics-new/update_periodic_metrics.sql
Normal file
@@ -0,0 +1,139 @@
|
||||
-- Description: Calculates metrics that don't need hourly updates, like ABC class
|
||||
-- and average lead time.
|
||||
-- Dependencies: product_metrics, purchase_orders, settings_global, calculate_status.
|
||||
-- Frequency: Daily or Weekly (e.g., run via cron job overnight).
|
||||
|
||||
DO $$
|
||||
DECLARE
|
||||
_module_name TEXT := 'periodic_metrics';
|
||||
_start_time TIMESTAMPTZ := clock_timestamp();
|
||||
_last_calc_time TIMESTAMPTZ;
|
||||
_abc_basis VARCHAR;
|
||||
_abc_period INT;
|
||||
_threshold_a NUMERIC;
|
||||
_threshold_b NUMERIC;
|
||||
BEGIN
|
||||
-- Get the timestamp before the last successful run of this module
|
||||
SELECT last_calculation_timestamp INTO _last_calc_time
|
||||
FROM public.calculate_status
|
||||
WHERE module_name = _module_name;
|
||||
|
||||
RAISE NOTICE 'Running % module. Start Time: %', _module_name, _start_time;
|
||||
|
||||
-- 1. Calculate Average Lead Time
|
||||
RAISE NOTICE 'Calculating Average Lead Time...';
|
||||
WITH LeadTimes AS (
|
||||
SELECT
|
||||
po.pid,
|
||||
-- Calculate lead time by looking at when items ordered on POs were received
|
||||
AVG(GREATEST(1, (r.received_date::date - po.date::date))) AS avg_days -- Use GREATEST(1,...) to avoid 0 or negative days
|
||||
FROM public.purchase_orders po
|
||||
-- Join to receivings table to find actual receipts
|
||||
JOIN public.receivings r ON r.pid = po.pid
|
||||
WHERE po.status = 'done' -- Only include completed POs
|
||||
AND r.received_date >= po.date -- Ensure received date is not before order date
|
||||
-- Optional: add check to make sure receiving is related to PO if you have source_po_id
|
||||
-- AND (r.source_po_id = po.po_id OR r.source_po_id IS NULL)
|
||||
GROUP BY po.pid
|
||||
)
|
||||
UPDATE public.product_metrics pm
|
||||
SET avg_lead_time_days = lt.avg_days::int
|
||||
FROM LeadTimes lt
|
||||
WHERE pm.pid = lt.pid
|
||||
AND pm.avg_lead_time_days IS DISTINCT FROM lt.avg_days::int; -- Only update if changed
|
||||
RAISE NOTICE 'Finished Average Lead Time calculation.';
|
||||
|
||||
|
||||
-- 2. Calculate ABC Classification
|
||||
RAISE NOTICE 'Calculating ABC Classification...';
|
||||
-- Get ABC settings
|
||||
SELECT setting_value INTO _abc_basis FROM public.settings_global WHERE setting_key = 'abc_calculation_basis' LIMIT 1;
|
||||
SELECT setting_value::numeric INTO _threshold_a FROM public.settings_global WHERE setting_key = 'abc_revenue_threshold_a' LIMIT 1;
|
||||
SELECT setting_value::numeric INTO _threshold_b FROM public.settings_global WHERE setting_key = 'abc_revenue_threshold_b' LIMIT 1;
|
||||
_abc_basis := COALESCE(_abc_basis, 'revenue_30d'); -- Default basis
|
||||
_threshold_a := COALESCE(_threshold_a, 0.80);
|
||||
_threshold_b := COALESCE(_threshold_b, 0.95);
|
||||
|
||||
RAISE NOTICE 'Using ABC Basis: %, Threshold A: %, Threshold B: %', _abc_basis, _threshold_a, _threshold_b;
|
||||
|
||||
WITH RankedProducts AS (
|
||||
SELECT
|
||||
pid,
|
||||
-- Dynamically select the metric based on setting
|
||||
CASE _abc_basis
|
||||
WHEN 'sales_30d' THEN COALESCE(sales_30d, 0)
|
||||
WHEN 'lifetime_revenue' THEN COALESCE(lifetime_revenue, 0)::numeric -- Cast needed if different type
|
||||
ELSE COALESCE(revenue_30d, 0) -- Default to revenue_30d
|
||||
END AS metric_value
|
||||
FROM public.product_metrics
|
||||
WHERE is_replenishable = TRUE -- Typically only classify replenishable items
|
||||
),
|
||||
Cumulative AS (
|
||||
SELECT
|
||||
pid,
|
||||
metric_value,
|
||||
SUM(metric_value) OVER (ORDER BY metric_value DESC NULLS LAST ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) as cumulative_metric,
|
||||
SUM(metric_value) OVER () as total_metric
|
||||
FROM RankedProducts
|
||||
WHERE metric_value > 0 -- Exclude items with no contribution
|
||||
)
|
||||
UPDATE public.product_metrics pm
|
||||
SET abc_class =
|
||||
CASE
|
||||
WHEN c.cumulative_metric / NULLIF(c.total_metric, 0) <= _threshold_a THEN 'A'
|
||||
WHEN c.cumulative_metric / NULLIF(c.total_metric, 0) <= _threshold_b THEN 'B'
|
||||
ELSE 'C'
|
||||
END
|
||||
FROM Cumulative c
|
||||
WHERE pm.pid = c.pid
|
||||
AND pm.abc_class IS DISTINCT FROM ( -- Only update if changed
|
||||
CASE
|
||||
WHEN c.cumulative_metric / NULLIF(c.total_metric, 0) <= _threshold_a THEN 'A'
|
||||
WHEN c.cumulative_metric / NULLIF(c.total_metric, 0) <= _threshold_b THEN 'B'
|
||||
ELSE 'C'
|
||||
END);
|
||||
|
||||
-- Set non-contributing or non-replenishable to 'C' or NULL if preferred
|
||||
UPDATE public.product_metrics
|
||||
SET abc_class = 'C' -- Or NULL
|
||||
WHERE abc_class IS NULL AND is_replenishable = TRUE; -- Catch those with 0 metric value
|
||||
|
||||
UPDATE public.product_metrics
|
||||
SET abc_class = NULL -- Or 'N/A'?
|
||||
WHERE is_replenishable = FALSE AND abc_class IS NOT NULL; -- Unclassify non-replenishable items
|
||||
|
||||
|
||||
RAISE NOTICE 'Finished ABC Classification calculation.';
|
||||
|
||||
-- Add other periodic calculations here if needed (e.g., recalculating first/last dates)
|
||||
|
||||
-- Update the status table with the timestamp from the START of this run
|
||||
UPDATE public.calculate_status
|
||||
SET last_calculation_timestamp = _start_time
|
||||
WHERE module_name = _module_name;
|
||||
|
||||
RAISE NOTICE 'Finished % module. Duration: %', _module_name, clock_timestamp() - _start_time;
|
||||
|
||||
END $$;
|
||||
|
||||
-- Return metrics about the update operation for tracking
|
||||
WITH update_stats AS (
|
||||
SELECT
|
||||
COUNT(*) as total_products,
|
||||
COUNT(*) FILTER (WHERE last_calculated >= NOW() - INTERVAL '5 minutes') as rows_processed,
|
||||
COUNT(*) FILTER (WHERE abc_class = 'A') as abc_a_count,
|
||||
COUNT(*) FILTER (WHERE abc_class = 'B') as abc_b_count,
|
||||
COUNT(*) FILTER (WHERE abc_class = 'C') as abc_c_count,
|
||||
COUNT(*) FILTER (WHERE avg_lead_time_days IS NOT NULL) as products_with_lead_time,
|
||||
AVG(avg_lead_time_days) as overall_avg_lead_time
|
||||
FROM public.product_metrics
|
||||
)
|
||||
SELECT
|
||||
rows_processed,
|
||||
total_products,
|
||||
abc_a_count,
|
||||
abc_b_count,
|
||||
abc_c_count,
|
||||
products_with_lead_time,
|
||||
ROUND(overall_avg_lead_time, 1) as overall_avg_lead_time
|
||||
FROM update_stats;
|
||||
Reference in New Issue
Block a user