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Made-with: Cursor

db/migration/V002__timescale_hypertables.sql

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+-- =============================================================
+-- V002__timescale_hypertables.sql
+-- EMS Platform – vytvoření TimescaleDB hypertable pro časové série
+-- Spouštět po V001 a po instalaci TimescaleDB extension
+-- =============================================================
+
+CREATE EXTENSION IF NOT EXISTS timescaledb;
+
+-- Telemetrie střídače – 1min záznamy, partitioning po 1 týdnu
+SELECT create_hypertable(
+    'ems.telemetry_inverter',
+    'measured_at',
+    chunk_time_interval => INTERVAL '1 week',
+    if_not_exists => TRUE
+);
+
+-- Telemetrie EV nabíječek
+SELECT create_hypertable(
+    'ems.telemetry_ev_charger',
+    'measured_at',
+    chunk_time_interval => INTERVAL '1 week',
+    if_not_exists => TRUE
+);
+
+-- Telemetrie tepelného čerpadla
+SELECT create_hypertable(
+    'ems.telemetry_heat_pump',
+    'measured_at',
+    chunk_time_interval => INTERVAL '1 week',
+    if_not_exists => TRUE
+);
+
+-- Spotové ceny – 15min záznamy, partitioning po 1 měsíci
+SELECT create_hypertable(
+    'ems.market_interval_price',
+    'interval_start',
+    chunk_time_interval => INTERVAL '1 month',
+    if_not_exists => TRUE
+);
+
+-- FVE predikce – 15min záznamy
+SELECT create_hypertable(
+    'ems.forecast_pv_interval',
+    'interval_start',
+    chunk_time_interval => INTERVAL '1 month',
+    if_not_exists => TRUE
+);
+
+-- Predikce počasí
+SELECT create_hypertable(
+    'ems.forecast_weather_interval',
+    'interval_start',
+    chunk_time_interval => INTERVAL '1 month',
+    if_not_exists => TRUE
+);
+
+-- Audit
+SELECT create_hypertable(
+    'ems.audit_interval',
+    'interval_start',
+    chunk_time_interval => INTERVAL '1 month',
+    if_not_exists => TRUE
+);
+
+-- Bazální spotřeba
+SELECT create_hypertable(
+    'ems.consumption_baseline_interval',
+    'interval_start',
+    chunk_time_interval => INTERVAL '1 month',
+    if_not_exists => TRUE
+);
+
+-- ============================================================
+-- Kompresní politiky pro staré chunky
+-- Telemetrie starší 30 dní komprimovat (čtení stačí)
+-- ============================================================
+
+SELECT add_compression_policy('ems.telemetry_inverter',    INTERVAL '30 days', if_not_exists => TRUE);
+SELECT add_compression_policy('ems.telemetry_ev_charger',  INTERVAL '30 days', if_not_exists => TRUE);
+SELECT add_compression_policy('ems.telemetry_heat_pump',   INTERVAL '30 days', if_not_exists => TRUE);
+SELECT add_compression_policy('ems.market_interval_price', INTERVAL '90 days', if_not_exists => TRUE);