Первоначальный коммит

Co-authored-by: Cursor <cursoragent@cursor.com>

play-life-backend/migrations_old/028_optimize_task_queries.sql

@@ -0,0 +1,14 @@
+-- Migration: Optimize task queries with composite index
+-- Date: 2026-01-24
+--
+-- This migration adds a composite index to optimize the task detail query:
+-- WHERE id = $1 AND user_id = $2 AND deleted = FALSE
+--
+-- The index uses a partial index with WHERE deleted = FALSE to reduce index size
+-- and improve query performance for active (non-deleted) tasks.
+
+CREATE INDEX IF NOT EXISTS idx_tasks_id_user_deleted 
+ON tasks(id, user_id, deleted) 
+WHERE deleted = FALSE;
+
+COMMENT ON INDEX idx_tasks_id_user_deleted IS 'Composite index for optimizing task detail queries with id, user_id, and deleted filter. Partial index for non-deleted tasks only.';