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class MigrateBuildToCommits < ActiveRecord::Migration
def change
execute <<eos
INSERT INTO commits ( sha, project_id, ref, before_sha, push_data )
SELECT sha, project_id, ref, before_sha, push_data FROM builds
WHERE id IN (SELECT MAX(id) FROM builds GROUP BY sha)
eos
if ActiveRecord::Base.connection.adapter_name == 'PostgreSQL'
execute <<eos
UPDATE builds
SET commit_id = commits.id
FROM commits
WHERE commits.sha = builds.sha
eos
else
execute "UPDATE builds b, commits c SET b.commit_id = c.id WHERE c.sha = b.sha"
end
end
end
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