Commit 2e9103b8 authored by unknown's avatar unknown
Browse files

Merge chilla.local:/home/mydev/mysql-4.1-bug12240 

into  chilla.local:/home/mydev/mysql-5.0-bug12240


sql/sql_select.cc:
  Bug#12240 - Rows Examined in Slow Log showing incorrect number?
  Manual merge from 4.1.
parents 8f8340ab 29929bb6

sql/sql_select.cc

+18 −6
Original line number Diff line number Diff line
@@ -1365,11 +1365,12 @@ JOIN::exec() 
    DBUG_VOID_RETURN;

  }

  /*

    don't reset the found rows count if there're no tables

    as FOUND_ROWS() may be called.

    Don't reset the found rows count if there're no tables as

    FOUND_ROWS() may be called. Never reset the examined row count here.

    It must be accumulated from all join iterations of all join parts.

  */

  if (tables)

    thd->limit_found_rows= thd->examined_row_count= 0;

    thd->limit_found_rows= 0;



  if (zero_result_cause)

  {
@@ -1417,6 +1418,12 @@ JOIN::exec() 
  List<Item> *curr_all_fields= &all_fields;

  List<Item> *curr_fields_list= &fields_list;

  TABLE *curr_tmp_table= 0;

  /*

    Initialize examined rows here because the values from all join parts

    must be accumulated in examined_row_count. Hence every join

    iteration must count from zero.

  */

  curr_join->examined_rows= 0;



  if ((curr_join->select_lex->options & OPTION_SCHEMA_TABLE) &&

      get_schema_tables_result(curr_join))
@@ -1823,9 +1830,12 @@ JOIN::exec() 
                        Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF);

    error= do_select(curr_join, curr_fields_list, NULL, procedure);

    thd->limit_found_rows= curr_join->send_records;

    thd->examined_row_count= curr_join->examined_rows;

  }



  /* Accumulate the counts from all join iterations of all join parts. */

  thd->examined_row_count+= curr_join->examined_rows;

  DBUG_PRINT("counts", ("thd->examined_row_count: %lu",

                        (ulong) thd->examined_row_count));

  DBUG_VOID_RETURN;

}
@@ -10129,6 +10139,8 @@ evaluate_join_record(JOIN *join, JOIN_TAB *join_tab, 
    */

    join->examined_rows++;

    join->thd->row_count++;

    DBUG_PRINT("counts", ("join->examined_rows++: %lu",

                          (ulong) join->examined_rows));



    if (found)

    {