关于mysql5.6.13的一个疑问_MySQL

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关于mysql5.6.13的一个疑问

现在在做一个系统

使用了这么一个查询

select a.id,a.fdate,a.fbillno,e.fname as fwarehousename,a.fnote,c.fname as fsupplyname,d.fname as fdeptname,a.fempname,b.fid,b.fname,b.fnumber,b.fprice,b.famount,a.fyear,a.fperiod,a.fbillerid,b.fac,a.voucherid from stockbill a right join entry b on a.fbillno=b.fbillno left join supplier c on a.fsupplyid=c.fid left join department d on a.fdeptid=d.fid left join warehouse e on a.fwarehouse=e.fid where a.fbilltypeid='1' and a.fdeleted=0 and b.fbilltypeid='1' and a.fdate>='2013-07-01' and a.fdate='2013-07-01' and b.fdate

我用同样的配置

发现mysql 5.5.33进行了缓存，另一个mysql 5.6.13没有缓存到，很奇怪

使用show status like 'Qcache'，发现运行了一天后

Qcache_hits值为0

但是5.5.33运行一会就有了数据

my.ini的内容如下：

[mysqld]# generic configuration optionsport  = 3306basedir=D:/wamp/mysqldatadir=D:/wamp/data5/tmpdir=D:/wamp/tmp/#change1 character-set-server=utf8#character_set_server=utf8 either is okcharacter-set-server=utf8#change 2 无法使用#table_cache=2048wait_timeout=60interactive_timeout=30skip-name-resolvebind-address=0.0.0.0innodb_file_per_table=1innodb_open_files=2048back_log = 500max_connections = 50max_connect_errors = 100table_open_cache = 2048max_allowed_packet = 32Mbinlog_cache_size = 1Mmax_heap_table_size = 256Mread_buffer_size = 16Mread_rnd_buffer_size = 16Msort_buffer_size = 16Mjoin_buffer_size = 32Mthread_cache_size = 64thread_concurrency =4query_cache_size = 128Mquery_cache_limit = 2Mft_min_word_len = 4default-storage-engine = Innodbthread_stack = 192K# Set the default transaction isolation level. Levels available are:# READ-UNCOMMITTED, READ-COMMITTED, REPEATABLE-READ, SERIALIZABLE#change 11 事务隔离级别#transaction_isolation = REPEATABLE-READtmp_table_size = 256Mmax_tmp_tables=512slow-query-log=1long_query_time = 2slow-query-log-file=slow.logserver-id = 1#*** MyISAM Specific optionskey_buffer_size = 128Mbulk_insert_buffer_size = 64Mmyisam_sort_buffer_size = 128Mmyisam_max_sort_file_size=2048Mmyisam_repair_threads = 1myisam_recover# *** INNODB Specific options ***innodb_additional_mem_pool_size = 16Minnodb_buffer_pool_size =2048Minnodb_data_file_path = ibdata1:10M:autoextendinnodb_write_io_threads = 8innodb_read_io_threads = 8innodb_thread_concurrency =4innodb_flush_log_at_trx_commit = 0innodb_log_buffer_size = 8Minnodb_log_file_size = 128Minnodb_log_files_in_group = 2innodb_max_dirty_pages_pct = 80innodb_lock_wait_timeout = 60

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