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class ChangeGovukGuixRevisionsPrimaryKey < ActiveRecord::Migration[5.1]
def change
execute 'ALTER TABLE govuk_guix_revisions DROP CONSTRAINT govuk_guix_revisions_pkey;'
execute 'ALTER TABLE govuk_guix_revisions ADD PRIMARY KEY (commit_hash);'
remove_column :govuk_guix_revisions, :id
end
end
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