int mysql_kill(MYSQL *mysql, unsigned long
pid)
Asks the server to kill the thread specified by
pid.
This function is deprecated. It is preferable to use
mysql_query() to issue an SQL
KILL statement instead.
Zero for success. Nonzero if an error occurred.
Commands were executed in an improper order.
The MySQL server has gone away.
The connection to the server was lost during the query.
An unknown error occurred.