For reporting engines, it may be advantageous to use stored procedures. This requires the CLIENT_MULTI_STATEMENTS flag to be set in mysql_real_connect() as described on http://dev.mysql.com/doc/refman/5.0/en/c-api-multiple-queries.html
Patch attached for inputs/mysql/mysql.c for v1.3.7
stored procedure patch (mysql) for 1.3.7