Add submission indexes to optimize user_problems

judge/migrations/0154_add_submission_indexes.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.2.18 on 2023-03-08 01:55
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("judge", "0153_drop_comment_page"),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name="submission",
+            index=models.Index(
+                fields=["problem", "user", "-points"],
+                name="judge_submi_problem_5687ea_idx",
+            ),
+        ),
+        migrations.AddIndex(
+            model_name="submission",
+            index=models.Index(
+                fields=["contest_object", "problem", "user", "-points"],
+                name="judge_submi_contest_31cdbb_idx",
+            ),
+        ),
+    ]