-- source include/have_query_cache.inc set GLOBAL query_cache_size=1355776; # Reset query cache variables. flush query cache; # This crashed in some versions flush query cache; # This crashed in some versions reset query cache; flush status; --disable_warnings drop table if exists t1; --enable_warnings # # First simple test # create table t1 (a int not null); insert into t1 values (1),(2),(3); set global query_cache_strip_comments=ON; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from '/* with comment */ select * from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; execute stmt; execute stmt; execute stmt; execute stmt; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * /*internal comment*/from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * /*internal comment*/ from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 /* at the end */'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 /* with "quote" */'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 /* with \'quote\' */'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 # 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 # 123 with "quote" '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 # 123 with \'quote\' '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 # 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from '#456 select * from t1 # 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 -- 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select * from t1 -- 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from '-- comment in first select * from t1 # 123 '; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from '(#456( select * from t1 # 123( )'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from '/*test*/(-- comment in first( select * from t1 -- 123 asdasd /* test */)'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select "test",a from t1'; execute stmt; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select "test /* internal \'comment\' */",a from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select "test #internal comment" ,a from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; prepare stmt from 'select "test #internal comment" #external comment ,a from t1'; execute stmt; show status like "Qcache_queries_in_cache"; show status like "Qcache_inserts"; show status like "Qcache_hits"; DROP TABLE t1; SET GLOBAL query_cache_size= default; set global query_cache_strip_comments=OFF;