Sql>show variables like “have%”; 59. have_query_cache 如果mysqld支持查询缓存则为YES。 Sql>show variables like “have%”; 60. have_raid(未找到) 如果mysqld支持RAID选项则为YES。 61. have_rtree_keys RTREE索引是否可用。(用于MyISAM表的空间索引)。 Sql>show variables like “have%”; 62. h...
Sql>show variables like “have%”; 59. have_query_cache 如果mysqld支持查询缓存则为YES。 Sql>show variables like “have%”; 60. have_raid(未找到) 如果mysqld支持RAID选项则为YES。 61. have_rtree_keys RTREE索引是否可用。(用于MyISAM表的空间索引)。 Sql>show variables like “have%”; 62. h...
| have_query_cache |YES| | host_cache_size |279| | innodb_disable_sort_file_cache |OFF| | innodb_ft_cache_size |8000000| | innodb_ft_result_cache_limit |2000000000| | innodb_ft_total_cache_size |640000000| | key_cache_age_threshold |300| | key_cache_block_size |1024| | key_cac...
SET GLOBAL query_cache_size = 40000; SHOW VARIABLES LIKE 'query_cache_size'; SHOW VARIABLES LIKE 'query_cache%'; 开启缓存后: select * from ad_position where id=201; SHOW STATUS LIKE 'Qcache_hits'; 查询命中次数 SET SESSION query_cache_type = ON;(ON:1,OFF:0,2:DEMAND) on 启用缓存,S...
cache client name [ query-name name | query-type { A | AAAA | NAPTR | SRV } ] displays statistics for the cache of an existing DNS client specified as an alphanumeric string of 1 through 255 characters. query-name name : Filters DNS results based on...
Lines with words like "disconnect" will be excluded because there are not spaces around the instance of the string "is". Router# show interface | include ( is ) ATM0 is administratively down, line protocol is down Hardware is ATMizer BX-50 Dialer1 is up (spoofing), line protocol ...
In order to use Non-parameter SQL variables with MySql Connector, you have to add the following option to your connection string: Allow User Variables=True Make sure you don't provide Dapper with a property to map. Limitations and caveats Dapper caches information about every query it runs, ...
SHOW VARIABLES command be removed as well. Several critical production servers have been made unusable soon after upgrades from MySQL4 to MySQL5 because of the drastic change in performance for SHOW commands because they use temp tables. The JDBC option cacheServerConfiguration helps in some cases,...
| have_profiling | YES | +---+---+ 默认是关闭的,开启该功能。 set profiling=on; 查看开启状态。15表示历史缓存sql的个数。 show variables like 'profiling%'; +---+---+ | Variable_name | Value | +---+---+ | profiling | ON |...
VARIABLES LIKE 'binlog%'; +---+---+ | Variable_name | Value | +---+---+ | binlog_cache_size | 32768 | | binlog_checksum | CRC32 | | binlog_direct_non_transactional_updates | OFF | | binlog_error_action | IGNORE_ERROR | | binlog_format | STATEMENT | | binlog_group_comm...