build_insert_sql

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 304
      def build_insert_sql(insert) # :nodoc:
        sql = +"INSERT #{insert.into} #{insert.values_list}"

        if insert.skip_duplicates?
          sql << " ON CONFLICT #{insert.conflict_target} DO NOTHING"
        elsif insert.update_duplicates?
          sql << " ON CONFLICT #{insert.conflict_target} DO UPDATE SET "
          sql << insert.touch_model_timestamps_unless { |column| "#{column} IS excluded.#{column}" }
          sql << insert.updatable_columns.map { |column| "#{column}=excluded.#{column}" }.join(",")
        end

        sql
      end