使用mysql的jdbc driver连接mysql数据库。经常出现下面的查询,请问是干啥的?/* mysql-connector-java-5.1.6 ( Revision: ${svn.Revision} ) */SHOW
VARIABLES WHERE Variable_name ='language' OR Variable_name = 'net_write_timeout' OR
Variable_name = 'interactive_timeout' OR Variable_name = 'wait_timeout' OR Variable_name
= 'character_set_client' OR Variable_name = 'character_set_connection' OR Variable_name =
'character_set' OR Variable_name = 'character_set_server' OR Variable_name =
'tx_isolation' OR Variable_name = 'transaction_isolation' OR Variable_name =
'character_set_results' OR Variable_name = 'timezone' OR Variable_name = 'time_zone' OR
Variable_name = 'system_time_zone' OR Variable_name = 'lower_case_table_names' OR
Variable_name = 'max_allowed_packet' OR Variable_name = 'net_buffer_length' OR
Variable_name = 'sql_mode' OR Variable_name = 'query_cache_type' OR Variable_name =
'query_cache_size' OR Variable_name = 'init_connect'
VARIABLES WHERE Variable_name ='language' OR Variable_name = 'net_write_timeout' OR
Variable_name = 'interactive_timeout' OR Variable_name = 'wait_timeout' OR Variable_name
= 'character_set_client' OR Variable_name = 'character_set_connection' OR Variable_name =
'character_set' OR Variable_name = 'character_set_server' OR Variable_name =
'tx_isolation' OR Variable_name = 'transaction_isolation' OR Variable_name =
'character_set_results' OR Variable_name = 'timezone' OR Variable_name = 'time_zone' OR
Variable_name = 'system_time_zone' OR Variable_name = 'lower_case_table_names' OR
Variable_name = 'max_allowed_packet' OR Variable_name = 'net_buffer_length' OR
Variable_name = 'sql_mode' OR Variable_name = 'query_cache_type' OR Variable_name =
'query_cache_size' OR Variable_name = 'init_connect'
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