48 lines
1.9 KiB
Plaintext
48 lines
1.9 KiB
Plaintext
SET @start_global_value = @@global.slave_checkpoint_period;
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SELECT @start_global_value;
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@start_global_value
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300
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select @@global.slave_checkpoint_period;
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@@global.slave_checkpoint_period
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300
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select @@session.slave_checkpoint_period;
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ERROR HY000: Variable 'slave_checkpoint_period' is a GLOBAL variable
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show global variables like 'slave_checkpoint_period';
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Variable_name Value
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slave_checkpoint_period period
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show session variables like 'slave_checkpoint_period';
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Variable_name Value
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slave_checkpoint_period period
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select * from performance_schema.global_variables where variable_name='slave_checkpoint_period';
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VARIABLE_NAME VARIABLE_VALUE
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slave_checkpoint_period period
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select * from performance_schema.session_variables where variable_name='slave_checkpoint_period';
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VARIABLE_NAME VARIABLE_VALUE
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slave_checkpoint_period period
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set global slave_checkpoint_period=1;
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select @@global.slave_checkpoint_period;
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@@global.slave_checkpoint_period
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1
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set session slave_checkpoint_period=1;
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ERROR HY000: Variable 'slave_checkpoint_period' is a GLOBAL variable and should be set with SET GLOBAL
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set global slave_checkpoint_period=1.1;
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_period'
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set global slave_checkpoint_period=1e1;
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_period'
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set global slave_checkpoint_period="foo";
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ERROR 42000: Incorrect argument type to variable 'slave_checkpoint_period'
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set global slave_checkpoint_period=1;
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select @@global.slave_checkpoint_period;
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@@global.slave_checkpoint_period
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1
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set global slave_checkpoint_period=cast(-1 as unsigned int);
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Warnings:
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Warning 1292 Truncated incorrect slave_checkpoint_period value: '18446744073709551615'
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select @@global.slave_checkpoint_period as "truncated to the maximum";
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truncated to the maximum
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4294967295
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SET @@global.slave_checkpoint_period = @start_global_value;
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SELECT @@global.slave_checkpoint_period;
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@@global.slave_checkpoint_period
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300
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