Method reset_for_next_command

sql/sql_parse.cc:7437–7536

*/

void THD::reset_for_next_command(bool do_clear_error)
{
  DBUG_ENTER("THD::reset_for_next_command");
  DBUG_ASSERT(!spcont); /* not for substatements of routines */
  DBUG_ASSERT(!in_sub_stmt);
  /*
    Table maps should have been reset after previous statement except in the
    case where we have locked tables
  */
  DBUG_ASSERT(binlog_table_maps == 0 ||
              locked_tables_mode == LTM_LOCK_TABLES);

  if (likely(do_clear_error))
  {
    clear_error(1);
    /*
      The following variable can't be reset in clear_error() as
      clear_error() is called during auto_repair of table
    */
    error_printed_to_log= 0;
  }
  free_list= 0;
  /*
    We also assign stmt_lex in lex_start(), but during bootstrap this
    code is executed first.
  */
  DBUG_ASSERT(lex == &main_lex);
  main_lex.stmt_lex= &main_lex; main_lex.current_select_number= 0;
  /*
    Those two lines below are theoretically unneeded as
    THD::cleanup_after_query() should take care of this already.
  */
  auto_inc_intervals_in_cur_stmt_for_binlog.empty();
  stmt_depends_on_first_successful_insert_id_in_prev_stmt= 0;

#ifdef WITH_WSREP
  /*
    Autoinc variables should be adjusted only for locally executed
    transactions. Appliers and replayers are either processing ROW
    events or get autoinc variable values from Query_log_event and
    mysql slave may be processing STATEMENT format events, but he should
    use autoinc values passed in binlog events, not the values forced by
    the cluster.
  */
  if (WSREP_NNULL(this) && wsrep_thd_is_local(this) &&
      !slave_thread && wsrep_auto_increment_control)
  {
    variables.auto_increment_offset=
      global_system_variables.auto_increment_offset;
    variables.auto_increment_increment=
      global_system_variables.auto_increment_increment;
  }
#endif /* WITH_WSREP */

  used= 0;
  is_fatal_error= 0;
  variables.option_bits&= ~OPTION_BINLOG_THIS_STMT;