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SET @start_innodb_defragment_frequency = @@global.innodb_defragment_frequency;
SELECT @start_innodb_defragment_frequency;
@start_innodb_defragment_frequency
40
SELECT COUNT(@@global.innodb_defragment_frequency);
COUNT(@@global.innodb_defragment_frequency)
1
SET @@global.innodb_defragment_frequency = 200;
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
200
SET @@global.innodb_defragment_frequency = 1;
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1
SET @@global.innodb_defragment_frequency = 1000;
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1000
SET @@global.innodb_defragment_frequency = -1;
Warnings:
Warning 1292 Truncated incorrect innodb_defragment_frequency value: '-1'
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1
SET @@global.innodb_defragment_frequency = 10000;
Warnings:
Warning 1292 Truncated incorrect innodb_defragment_frequency value: '10000'
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1000
SET @@global.innodb_defragment_frequency = 10.5;
ERROR 42000: Incorrect argument type to variable 'innodb_defragment_frequency'
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1000
SET @@global.innodb_defragment_frequency = "abc";
ERROR 42000: Incorrect argument type to variable 'innodb_defragment_frequency'
SELECT @@global.innodb_defragment_frequency;
@@global.innodb_defragment_frequency
1000
SET @@global.innodb_defragment_frequency = @start_innodb_defragment_frequency;
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