frontend: add indices on some often queried result fields

fifoci/frontend/migrations/0004_alter_result_first_result_alter_result_has_change.py

@@ -0,0 +1,23 @@
+# Generated by Django 4.1.5 on 2023-01-27 08:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("frontend", "0003_alter_fifotest_shortname"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="result",
+            name="first_result",
+            field=models.BooleanField(db_index=True, default=False),
+        ),
+        migrations.AlterField(
+            model_name="result",
+            name="has_change",
+            field=models.BooleanField(db_index=True, default=False),
+        ),
+    ]

fifoci/frontend/models.py

@@ -46,10 +46,12 @@ class Type(models.Model):
 
 class Result(models.Model):
     dff = models.ForeignKey(FifoTest, on_delete=models.CASCADE)
-    ver = models.ForeignKey(Version, related_name="results", on_delete=models.CASCADE)
-    type = models.ForeignKey(Type, on_delete=models.CASCADE)
-    has_change = models.BooleanField(default=False)
-    first_result = models.BooleanField(default=False)
+    ver = models.ForeignKey(
+        Version, db_index=True, related_name="results", on_delete=models.CASCADE
+    )
+    type = models.ForeignKey(Type, db_index=True, on_delete=models.CASCADE)
+    has_change = models.BooleanField(default=False, db_index=True)
+    first_result = models.BooleanField(default=False, db_index=True)
 
     # Format: "h1,h2,h3,...,hN"
     hashes = models.TextField()