Add date version index on build (#11612)

Fixes readthedocs/ext-theme#463

readthedocs/builds/migrations/0059_add_version_date_index.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.2.16 on 2024-09-23 18:18
+
+from django.db import migrations, models
+from django_safemigrate import Safe
+
+
+class Migration(migrations.Migration):
+    safe = Safe.always
+    dependencies = [
+        ("builds", "0058_alter_version_created_alter_version_modified"),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name="build",
+            index=models.Index(
+                fields=["version", "date"], name="builds_buil_version_259bbf_idx"
+            ),
+        ),
+    ]

readthedocs/builds/models.py

@@ -846,6 +846,7 @@ class Meta:
         ]
         indexes = [
             models.Index(fields=["project", "date"]),
+            models.Index(fields=["version", "date"]),
         ]
 
     def __init__(self, *args, **kwargs):