- Update test results (trivial)

- Code cleanup: remove garbage comments

mysql-test/r/subselect_mat.result

 set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
 drop table if exists t1, t2, t3, t1i, t2i, t3i;
+drop table if exists columns;
+drop table if exists t1_16, t2_16, t3_16;
 drop view if exists v1, v2, v1m, v2m;
 create table t1 (a1 char(8), a2 char(8));
 create table t2 (b1 char(8), b2 char(8));

sql/opt_subselect.cc

@@ -890,8 +890,6 @@ void get_delayed_table_estimates(TABLE *table,
 {
   Item_in_subselect *item= table->pos_in_table_list->jtbm_subselect;
 
-  //psergey-merge: moving off here: item->optimize(&rows, &read_time);
-
   DBUG_ASSERT(item->engine->engine_type() ==
               subselect_engine::HASH_SJ_ENGINE);
 
@@ -1322,12 +1320,9 @@ static bool convert_subq_to_jtbm(JOIN *parent_join,
   TABLE_LIST *tl;
   DBUG_ENTER("convert_subq_to_jtbm");
 
-  //if (subq_pred->setup_engine(TRUE))
-  //  DBUG_RETURN(TRUE);
   double rows;
   double read_time;
 
-  // psergey-merge: disable IN->EXISTS for JTBM subqueries, for now.
   subq_pred->in_strategy &= ~SUBS_IN_TO_EXISTS;
   subq_pred->optimize(&rows, &read_time);
 
@@ -1335,12 +1330,6 @@ static bool convert_subq_to_jtbm(JOIN *parent_join,
   subq_pred->jtbm_record_count=rows;
   subq_pred->is_jtbm_merged= TRUE;
 
-  //psergey-merge: The following is called inside optimize() call:
-#if 0
-  if (subq_pred->setup_mat_engine())
-    DBUG_RETURN(TRUE);
-#endif
-
   if (subq_pred->engine->engine_type() != subselect_engine::HASH_SJ_ENGINE)
   {
     *remove_item= FALSE;

sql/sql_base.cc

@@ -7816,28 +7816,6 @@ bool setup_tables(THD *thd, Name_resolution_context *context,
         DBUG_RETURN(1);
       }
       DBUG_ASSERT(item == table_list->jtbm_subselect->optimizer);
-  /*    
-      {
-        Item_in_subselect *subq_pred= table_list->jtbm_subselect;
-        double rows;
-        double read_time;
-
-        // psergey-merge: disable IN->EXISTS for JTBM subqueries, for now.
-        subq_pred->in_strategy &= ~SUBS_IN_TO_EXISTS;
-        subq_pred->optimize(&rows, &read_time);
-
-        subq_pred->jtbm_read_time= read_time;
-        subq_pred->jtbm_record_count=rows;
-        subq_pred->is_jtbm_merged= TRUE;
-      }
-      // The following call should never ever be made on its own anymore:
-      if (table_list->jtbm_subselect->setup_mat_engine()) // dont_switch_arena=FALSE 
-        DBUG_RETURN(1);
-  */
-      //psergey-merge: fix prepared statements:
-      //subselect_hash_sj_engine *mat_engine= 
-      //  (subselect_hash_sj_engine*)table_list->jtbm_subselect->engine;
-      //table= table_list->table= mat_engine->tmp_table;
     }
   }
 

sql/sql_select.cc

@@ -785,7 +785,6 @@ inject_jtbm_conds(JOIN *join, List<TABLE_LIST> *join_list, Item **join_where)
       double rows;
       double read_time;
 
-      // psergey-merge: disable IN->EXISTS for JTBM subqueries, for now.
       subq_pred->in_strategy &= ~SUBS_IN_TO_EXISTS;
       subq_pred->optimize(&rows, &read_time);
 
@@ -908,7 +907,6 @@ JOIN::optimize()
       thd->restore_active_arena(arena, &backup);
   }
   
-  //psergey-merge
   inject_jtbm_conds(this, join_list, &conds);
 
   conds= optimize_cond(this, conds, join_list, &cond_value, &cond_equal);