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play-life-backend/migrations/005_fix_weekly_report_mv.sql

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+-- Migration: Fix weekly_report_mv to use ISOYEAR instead of YEAR
+-- This fixes incorrect week calculations at year boundaries
+-- Date: 2024
+
+-- Drop existing materialized view
+DROP MATERIALIZED VIEW IF EXISTS weekly_report_mv;
+
+-- Recreate materialized view with ISOYEAR
+CREATE MATERIALIZED VIEW weekly_report_mv AS
+SELECT
+    n.project_id,
+    -- 🔑 ГЛАВНОЕ ИСПРАВЛЕНИЕ: Используем ISOYEAR
+    EXTRACT(ISOYEAR FROM e.created_date)::INTEGER AS report_year,
+    EXTRACT(WEEK FROM e.created_date)::INTEGER AS report_week,
+    SUM(n.score) AS total_score
+FROM
+    nodes n
+JOIN
+    entries e ON n.entry_id = e.id
+GROUP BY
+    1, 2, 3
+WITH DATA;
+
+-- Recreate index
+CREATE INDEX IF NOT EXISTS idx_weekly_report_mv_project_year_week 
+    ON weekly_report_mv(project_id, report_year, report_week);
+
+COMMENT ON MATERIALIZED VIEW weekly_report_mv IS 'Materialized view aggregating weekly scores by project using ISOYEAR for correct week calculations';
+