Backport partial index to find repositories that have not been checked

This was introduced in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5984.

1 files changed, 18 insertions, 0 deletions

diff --git a/db/post_migrate/20180629191052_add_partial_index_to_projects_for_last_repository_check_at.rb b/db/post_migrate/20180629191052_add_partial_index_to_projects_for_last_repository_check_at.rb
new file mode 100644
index 00000000000..a701d3678db
--- /dev/null
+++ b/db/post_migrate/20180629191052_add_partial_index_to_projects_for_last_repository_check_at.rb
@@ -0,0 +1,18 @@
+class AddPartialIndexToProjectsForLastRepositoryCheckAt < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  INDEX_NAME = "index_projects_on_last_repository_check_at"
+
+  def up
+    add_concurrent_index(:projects, :last_repository_check_at, where: "last_repository_check_at IS NOT NULL", name: INDEX_NAME)
+  end
+
+  def down
+    remove_concurrent_index(:projects, :last_repository_check_at, where: "last_repository_check_at IS NOT NULL", name: INDEX_NAME)
+  end
+end