Bug 1278711 - Add unique_together index for job_detail (#1667)

treeherder/model/migrations/0036_job_details_unique_together.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('model', '0035_job_detail_field_lengths_decrease'),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            # Using ALTER IGNORE so that it will automatically delete duplicates
+            ("ALTER IGNORE TABLE `job_detail` ADD CONSTRAINT "
+             "`job_detail_title_11a9e7f847f5214c_uniq` "
+             "UNIQUE (`title`, `value`, `job_id`);"),
+            state_operations=[
+                migrations.AlterUniqueTogether(
+                    name='jobdetail',
+                    unique_together=set([('title', 'value', 'job')]),
+                ),
+            ],
+        ),
+    ]

treeherder/model/models.py

@@ -613,6 +613,7 @@ class JobDetail(models.Model):
 
     class Meta:
         db_table = "job_detail"
+        unique_together = ("title", "value", "job")
 
     def __str__(self):
         return "{0} {1} {2} {3} {4}".format(self.id,