drop table if exists t1; CREATE FUNCTION metaphon RETURNS STRING SONAME "UDF_EXAMPLE_LIB"; create table t1 (a char); set GLOBAL query_cache_size=1355776; reset query cache; flush status; select metaphon('MySQL') from t1; metaphon('MySQL') show status like "Qcache_hits"; Variable_name Value Qcache_hits 0 show status like "Qcache_queries_in_cache"; Variable_name Value Qcache_queries_in_cache 0 select metaphon('MySQL') from t1; metaphon('MySQL') show status like "Qcache_hits"; Variable_name Value Qcache_hits 0 show status like "Qcache_queries_in_cache"; Variable_name Value Qcache_queries_in_cache 0 drop table t1; drop function metaphon; set GLOBAL query_cache_size=default;