class RemoveMRdiffFields < ActiveRecord::Migration def up remove_column :merge_requests, :st_commits remove_column :merge_requests, :st_diffs end def down add_column :merge_requests, :st_commits, :text, null: true, limit: 2147483647 add_column :merge_requests, :st_diffs, :text, null: true, limit: 2147483647 if ActiveRecord::Base.connection.adapter_name == 'PostgreSQL' execute "UPDATE merge_requests mr SET (st_commits, st_diffs) = (md.st_commits, md.st_diffs) FROM merge_request_diffs md WHERE md.merge_request_id = mr.id" else execute "UPDATE merge_requests mr, merge_request_diffs md SET mr.st_commits = md.st_commits WHERE md.merge_request_id = mr.id" execute "UPDATE merge_requests mr, merge_request_diffs md SET mr.st_diffs = md.st_diffs WHERE md.merge_request_id = mr.id" end end end