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* Add version 4.2 to all existing migrationsjprovazn-versioned-migrationsJan Provaznik2018-11-221-1/+1
| | | | | | | | | DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
* Denormalize commits count for merge request diffs38068-commits-countJan Provaznik2018-01-101-0/+29
For each MR diff an extra 'SELECT COUNT()' is executed to get number of commits for the diff. Overall time to get counts for all MR diffs may be quite expensive. To speed up loading of MR info, information about number of commits is stored in a MR diff's extra column. Closes #38068