ActiveRecord::ConnectionAdapters::MySQL::DatabaseStatements

# File activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb, line 36
        def build_explain_clause(options = [])
          return "EXPLAIN" if options.empty?

          explain_clause = "EXPLAIN #{options.join(" ").upcase}"

          if analyze_without_explain? && explain_clause.include?("ANALYZE")
            explain_clause.sub("EXPLAIN ", "")
          else
            explain_clause
          end
        end

# File activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb, line 27
        def explain(arel, binds = [], options = [])
          sql     = build_explain_clause(options) + " " + to_sql(arel, binds)
          start   = Process.clock_gettime(Process::CLOCK_MONOTONIC)
          result  = internal_exec_query(sql, "EXPLAIN", binds)
          elapsed = Process.clock_gettime(Process::CLOCK_MONOTONIC) - start

          MySQL::ExplainPrettyPrinter.new.pp(result, elapsed)
        end

# File activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb, line 23
        def high_precision_current_timestamp
          HIGH_PRECISION_CURRENT_TIMESTAMP
        end