1 files changed, 31 insertions, 0 deletions
diff --git a/db/post_migrate/20201216185336_add_devops_adoption_snapshot_not_null.rb b/db/post_migrate/20201216185336_add_devops_adoption_snapshot_not_null.rb
new file mode 100644
index 00000000000..1bb3c57f3cd
--- /dev/null
+++ b/db/post_migrate/20201216185336_add_devops_adoption_snapshot_not_null.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class AddDevopsAdoptionSnapshotNotNull < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      execute(
+        <<~SQL
+          LOCK TABLE analytics_devops_adoption_snapshots IN ACCESS EXCLUSIVE MODE;
+
+          UPDATE analytics_devops_adoption_snapshots SET end_time = date_trunc('month', recorded_at) - interval '1 millisecond';
+
+          ALTER TABLE analytics_devops_adoption_snapshots ALTER COLUMN end_time SET NOT NULL;
+      SQL
+      )
+    end
+  end
+
+  def down
+    with_lock_retries do
+      execute(<<~SQL)
+        ALTER TABLE analytics_devops_adoption_snapshots ALTER COLUMN end_time DROP NOT NULL;
+      SQL
+    end
+  end
+end