Method pfs_batch_update

sql/sql_select.cc:17095–17107

*/

bool JOIN_TAB::pfs_batch_update()
{
  /*
    Use PFS batch mode if
     1. tab is an inner-most table, or
     2. will read more than one row (not eq_ref or const access type)
     3. no subqueries
  */

  return join->join_tab + join->table_count - 1 == this &&              // 1
         type != JT_EQ_REF && type != JT_CONST  && type != JT_SYSTEM && // 2
         (!select_cond || !select_cond->with_subquery());               // 3
}


/**