sha,message,author_date,committer_date,raw_author,raw_committer,repo,author,committer
c5f8a2eb1a81a18b52825cc649112f71fe419b12,"in extract code, check equality witH IS instead of = for nulls (#455)

sqlite ""IS"" is equivalent to SQL ""IS NOT DISTINCT FROM""

close #423",2022-08-27T14:45:03Z,2022-08-27T14:45:03Z,88e22aeee75bfd8a1cdeae56a89d5509d1c1d1c4,cd792325681cbad9f663f2879d8b69f1edbb678f,140912432,536941,19864447