diff options
Diffstat (limited to 'db/post_migrate/20171026082505_populate_merge_requests_latest_merge_request_diff_id.rb')
-rw-r--r-- | db/post_migrate/20171026082505_populate_merge_requests_latest_merge_request_diff_id.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/db/post_migrate/20171026082505_populate_merge_requests_latest_merge_request_diff_id.rb b/db/post_migrate/20171026082505_populate_merge_requests_latest_merge_request_diff_id.rb new file mode 100644 index 00000000000..a7ebbbf34c0 --- /dev/null +++ b/db/post_migrate/20171026082505_populate_merge_requests_latest_merge_request_diff_id.rb @@ -0,0 +1,27 @@ +class PopulateMergeRequestsLatestMergeRequestDiffId < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + BATCH_SIZE = 1_000 + + class MergeRequest < ActiveRecord::Base + self.table_name = 'merge_requests' + + include ::EachBatch + end + + disable_ddl_transaction! + + def up + update = ' + latest_merge_request_diff_id = ( + SELECT MAX(id) + FROM merge_request_diffs + WHERE merge_requests.id = merge_request_diffs.merge_request_id + )'.squish + + MergeRequest.where(latest_merge_request_diff_id: nil).each_batch(of: BATCH_SIZE) do |relation| + relation.update_all(update) + end + end +end |