ha_innodb.cc, ha_innodb.h:

  	return(0);

}

/**********************************************************************

When we create a temporary table inside MySQL LOCK TABLES, MySQL will

not call external_lock for the temporary table when it uses it. Instead,

it will call this function. */

int

start_stmt(

/*=======*/

	              /* out: 0 or error code */

	THD*    thd)  /* in: handle to the user thread */

{

	row_prebuilt_t* prebuilt = (row_prebuilt_t*) innobase_prebuilt;

	trx_t*		trx;

  	DBUG_ENTER("ha_innobase::external_lock");

	update_thd(thd);

	trx = prebuilt->trx;

	innobase_release_stat_resources(trx);

	trx_mark_sql_stat_end(trx);

	auto_inc_counter_for_this_stat = 0;

	prebuilt->sql_stat_start = TRUE;

	prebuilt->hint_no_need_to_fetch_extra_cols = TRUE;

	prebuilt->read_just_key = 0;

	prebuilt->select_lock_type = LOCK_NONE;

	thd->transaction.all.innodb_active_trans = 1;

}

/**********************************************************************

As MySQL will execute an external lock for every new table it uses when it

starts to process an SQL statement, we can use this function to store the

pointer to the THD in the handle. We will also use this function to communicate

starts to process an SQL statement (an exception is when MySQL calls

start_stmt for the handle) we can use this function to store the pointer to

the THD in the handle. We will also use this function to communicate

to InnoDB that a new SQL statement has started and that we must store a

savepoint to our transaction handle, so that we are able to roll back

the SQL statement in case of an error. */

int

ha_innobase::external_lock(

/*=======================*/

			        /* out: 0 or error code */

	THD*	thd,		/* in: handle to the user thread */

	int 	lock_type)	/* in: lock type */

{

  	int extra(enum ha_extra_function operation);

  	int reset(void);

  	int external_lock(THD *thd, int lock_type);

	int start_stmt(THD *thd);

  	void position(byte *record);

  	ha_rows records_in_range(int inx,

			   const byte *start_key,uint start_key_len,