Method cleanup_after_query

sql/sql_class.cc:2504–2585

*/

void THD::cleanup_after_query()
{
  DBUG_ENTER("THD::cleanup_after_query");

  thd_progress_end(this);

  if (!spcont && !in_sub_stmt)
  {
    /*
      We're at the end of the top level statement
      (not just in the end of a stored routine individual statement).
    */
    statement_rcontext_reinit();
  }

  /*
    Reset RAND_USED so that detection of calls to rand() will save random
    seeds if needed by the slave.

    Do not reset RAND_USED if inside a stored function or trigger because
    only the call to these operations is logged. Thus only the calling 
    statement needs to detect rand() calls made by its substatements. These
    substatements must not set RAND_USED to 0 because it would remove the
    detection of rand() by the calling statement. 
  */
  if (!in_sub_stmt) /* stored functions and triggers are a special case */
  {
    /* Forget those values, for next binlogger: */
    stmt_depends_on_first_successful_insert_id_in_prev_stmt= 0;
    auto_inc_intervals_in_cur_stmt_for_binlog.empty();
    used&= ~THD::RAND_USED;
#ifndef EMBEDDED_LIBRARY
    /*
      Clean possible unused INSERT_ID events by current statement.
      is_update_query() is needed to ignore SET statements:
        Statements that don't update anything directly and don't
        used stored functions. This is mostly necessary to ignore
        statements in binlog between SET INSERT_ID and DML statement
        which is intended to consume its event (there can be other
        SET statements between them).
    */
    if ((rgi_slave || rli_fake) && is_update_query(lex->sql_command))
      auto_inc_intervals_forced.empty();
#endif
  }
  /*
    Forget the binlog stmt filter for the next query.
    There are some code paths that:
    - do not call THD::decide_logging_format()
    - do call THD::binlog_query(),
    making this reset necessary.
  */
  reset_binlog_local_stmt_filter();
  if (first_successful_insert_id_in_cur_stmt > 0)
  {
    /* set what LAST_INSERT_ID() will return */
    first_successful_insert_id_in_prev_stmt= 
      first_successful_insert_id_in_cur_stmt;