diff options
Diffstat (limited to 'lib/gitlab/database/migration_helpers.rb')
| -rw-r--r-- | lib/gitlab/database/migration_helpers.rb | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/gitlab/database/migration_helpers.rb b/lib/gitlab/database/migration_helpers.rb index 7b35c24d153..98de29f12a3 100644 --- a/lib/gitlab/database/migration_helpers.rb +++ b/lib/gitlab/database/migration_helpers.rb @@ -524,8 +524,9 @@ module Gitlab install_rename_triggers(table, column, temp_column) # Schedule the jobs that will copy the data from the old column to the - # new one. - relation.each_batch(of: batch_size) do |batch, index| + # new one. Rows with NULL values in our source column are skipped since + # the target column is already NULL at this point. + relation.where.not(column => nil).each_batch(of: batch_size) do |batch, index| start_id, end_id = batch.pluck('MIN(id), MAX(id)').first max_index = index |