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27 lines
1.2 KiB
Text
27 lines
1.2 KiB
Text
set @save_use_stat_tables= @@use_stat_tables;
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set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
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set @@optimizer_use_condition_selectivity=1;
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set @@use_stat_tables= NEVER;
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set @@session.max_heap_table_size=16*1024*1024;
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create table t1 select * from information_schema.session_status where variable_name like 'Opened%';
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create temporary table t2 (a int) engine=memory;
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select variable_name, session_status.variable_value - t1.variable_value
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from information_schema.session_status join t1 using (variable_name);
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variable_name session_status.variable_value - t1.variable_value
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OPENED_FILES 0
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OPENED_PLUGIN_LIBRARIES 0
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OPENED_TABLE_DEFINITIONS 2
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OPENED_TABLES 1
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OPENED_VIEWS 0
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truncate table t2;
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select variable_name, session_status.variable_value - t1.variable_value
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from information_schema.session_status join t1 using (variable_name);
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variable_name session_status.variable_value - t1.variable_value
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OPENED_FILES 0
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OPENED_PLUGIN_LIBRARIES 0
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OPENED_TABLE_DEFINITIONS 2
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OPENED_TABLES 1
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OPENED_VIEWS 0
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set @@use_stat_tables= @save_use_stat_tables;
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set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
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drop table t1;
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