instance method execute_and_clear

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 643
        def execute_and_clear(sql, name, binds, prepare: false)
          if preventing_writes? && write_query?(sql)
            raise ActiveRecord::ReadOnlyError, "Write query attempted while in readonly mode: #{sql}"
          end

          if !prepare || without_prepared_statement?(binds)
            result = exec_no_cache(sql, name, binds)
          else
            result = exec_cache(sql, name, binds)
          end
          begin
            ret = yield result
          ensure
            result.clear
          end
          ret
        end