6
--source include/have_innodb.inc
8
SET @start_global_value = @@global.innodb_old_blocks_time;
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SELECT @start_global_value;
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# exists as global only
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--echo Valid values are zero or above
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select @@global.innodb_old_blocks_time >=0;
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select @@global.innodb_old_blocks_time;
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--error ER_INCORRECT_GLOBAL_LOCAL_VAR
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select @@session.innodb_old_blocks_time;
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show global variables like 'innodb_old_blocks_time';
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show session variables like 'innodb_old_blocks_time';
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select * from information_schema.global_variables where variable_name='innodb_old_blocks_time';
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select * from information_schema.session_variables where variable_name='innodb_old_blocks_time';
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# show that it's writable
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set global innodb_old_blocks_time=10;
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select @@global.innodb_old_blocks_time;
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select * from information_schema.global_variables where variable_name='innodb_old_blocks_time';
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select * from information_schema.session_variables where variable_name='innodb_old_blocks_time';
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--error ER_GLOBAL_VARIABLE
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set session innodb_old_blocks_time=1;
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--error ER_WRONG_TYPE_FOR_VAR
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set global innodb_old_blocks_time=1.1;
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--error ER_WRONG_TYPE_FOR_VAR
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set global innodb_old_blocks_time=1e1;
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--error ER_WRONG_TYPE_FOR_VAR
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set global innodb_old_blocks_time="foo";
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set global innodb_old_blocks_time=-7;
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select @@global.innodb_old_blocks_time;
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select * from information_schema.global_variables where variable_name='innodb_old_blocks_time';
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SET @@global.innodb_old_blocks_time = @start_global_value;
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SELECT @@global.innodb_old_blocks_time;