Method execute

sql/sql_signal.cc:385–412

}

bool Sql_cmd_signal::execute(THD *thd)
{
  bool result= TRUE;
  DBUG_ASSERT(m_cond);
  Sql_condition cond(thd->mem_root, m_cond->get_user_condition_identity());

  DBUG_ENTER("Sql_cmd_signal::execute");

  /*
    WL#2110 SIGNAL specification says:

      When SIGNAL is executed, it has five effects, in the following order:

        (1) First, the diagnostics area is completely cleared. So if the
        SIGNAL is in a DECLARE HANDLER then any pending errors or warnings
        are gone. So is 'row count'.

    This has roots in the SQL standard specification for SIGNAL.
  */

  thd->get_stmt_da()->reset_diagnostics_area();
  thd->set_row_count_func(0);
  thd->get_stmt_da()->clear_warning_info(thd->query_id);

  result= raise_condition(thd, &cond);

  DBUG_RETURN(result);
}


/**