47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
SET @start_global_value = @@global.slave_checkpoint_group;
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SELECT @start_global_value;
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@start_global_value
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512
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select @@global.slave_checkpoint_group;
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@@global.slave_checkpoint_group
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512
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select @@session.slave_checkpoint_group;
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ERROR HY000: Variable 'slave_checkpoint_group' is a GLOBAL variable
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show global variables like 'slave_checkpoint_group';
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Variable_name Value
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slave_checkpoint_group 512
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show session variables like 'slave_checkpoint_group';
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Variable_name Value
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slave_checkpoint_group 512
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select * from performance_schema.global_variables where variable_name='slave_checkpoint_group';
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VARIABLE_NAME VARIABLE_VALUE
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slave_checkpoint_group 512
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select * from performance_schema.session_variables where variable_name='slave_checkpoint_group';
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VARIABLE_NAME VARIABLE_VALUE
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slave_checkpoint_group 512
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set global slave_checkpoint_group=1024;
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select @@global.slave_checkpoint_group;
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@@global.slave_checkpoint_group
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1024
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set session slave_checkpoint_group=1024;
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ERROR HY000: Variable 'slave_checkpoint_group' is a GLOBAL variable and should be set with SET GLOBAL
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set global slave_checkpoint_group=1.1;
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_group'
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set global slave_checkpoint_group=1e1;
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_group'
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set global slave_checkpoint_group="foo";
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_group'
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set global slave_checkpoint_group=0;
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Warnings:
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Warning 1292 Truncated incorrect slave_checkpoint_group value: '0'
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set global slave_checkpoint_group=cast(-1 as unsigned int);
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Warnings:
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Warning 1292 Truncated incorrect slave_checkpoint_group value: '18446744073709551615'
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select @@global.slave_checkpoint_group as "truncated to the maximum" ;
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truncated to the maximum
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524280
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SET @@global.slave_checkpoint_group = @start_global_value;
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SELECT @@global.slave_checkpoint_group;
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@@global.slave_checkpoint_group
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512
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