discourse/db/migrate/20160201181320_fix_email_lo...

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class FixEmailLogs < ActiveRecord::Migration
def up
execute <<-SQL
UPDATE email_logs
SET user_id = u.id
FROM email_logs el
LEFT JOIN users u ON u.email = el.to_address
WHERE email_logs.id = el.id
AND email_logs.user_id IS NULL
AND NOT email_logs.skipped
SQL
end
def down
end
end