# File lib/new_relic/agent/transaction/trace.rb, line 75
        def collect_explain_plans!
          return unless NewRelic::Agent::Database.should_collect_explain_plans?
          threshold = NewRelic::Agent.config['transaction_tracer.explain_threshold''transaction_tracer.explain_threshold']

          each_node do |node|
            if node[:sql] && node.duration > threshold
              node[:explain_plan] = node.explain_sql
            end
          end
        end