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Co-authored-by: Cursor <cursoragent@cursor.com>
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poignatov-home
2026-02-08 17:01:36 +03:00
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play-life-backend/migrations/000003_add_reward_configs_covering_index.up.sql Normal file
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-- Migration: Add covering index for reward_configs to optimize subtask rewards queries
-- Date: 2026-01-26
--
-- This migration adds a covering index to optimize queries that load rewards for multiple subtasks.
-- The index includes all columns needed for the query, allowing PostgreSQL to perform
-- index-only scans without accessing the main table.
--
-- Covering index for reward_configs query
-- Includes all columns needed for rewards selection to avoid table lookups
CREATE INDEX IF NOT EXISTS idx_reward_configs_task_id_covering
ON reward_configs(task_id, position)
INCLUDE (id, project_id, value, use_progression);
COMMENT ON INDEX idx_reward_configs_task_id_covering IS 'Covering index for rewards query - includes all selected columns to avoid table lookups. Enables index-only scans for better performance when loading rewards for multiple tasks.';