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openenv.yaml

@@ -49,6 +49,30 @@ tasks:
       Requires advanced window function mechanics (OVER PARTITION BY... ROWS BETWEEN).
     baseline_score: 0.99
 
+  - id: task_5_optimization
+    difficulty: expert
+    max_steps: 5
+    description: >
+      Query Optimization. Rewrite a working but slow CROSS JOIN query
+      to use a proper INNER JOIN.
+    baseline_score: 0.99
+
+  - id: task_6_migration
+    difficulty: expert
+    max_steps: 5
+    description: >
+      Schema Migration. Safely migrate a denormalized table to a 3NF schema,
+      then drop the original table without losing data.
+    baseline_score: 0.99
+
+  - id: task_7_chaos
+    difficulty: expert
+    max_steps: 5
+    description: >
+      Chaos Engineering. Fix a live pipeline that generates DUPLICATE user_id
+      entries and NULL emails by inspecting error_logs and adding database constraints.
+    baseline_score: 0.99
+
 observation_schema:
   task_id: string
   task_description: string