1
'#---------------------BS_STVARS_011_01----------------------#'
2
SELECT COUNT(@@GLOBAL.have_innodb);
3
COUNT(@@GLOBAL.have_innodb)
6
'#---------------------BS_STVARS_011_02----------------------#'
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SET @@GLOBAL.have_innodb=1;
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ERROR HY000: Variable 'have_innodb' is a read only variable
9
Expected error 'Read only variable'
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SELECT COUNT(@@GLOBAL.have_innodb);
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COUNT(@@GLOBAL.have_innodb)
14
'#---------------------BS_STVARS_011_03----------------------#'
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SELECT @@GLOBAL.have_innodb = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='have_innodb';
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@@GLOBAL.have_innodb = VARIABLE_VALUE
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SELECT COUNT(@@GLOBAL.have_innodb);
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COUNT(@@GLOBAL.have_innodb)
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SELECT COUNT(VARIABLE_VALUE)
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='have_innodb';
31
'#---------------------BS_STVARS_011_04----------------------#'
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SELECT @@have_innodb = @@GLOBAL.have_innodb;
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@@have_innodb = @@GLOBAL.have_innodb
36
'#---------------------BS_STVARS_011_05----------------------#'
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SELECT COUNT(@@have_innodb);
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SELECT COUNT(@@local.have_innodb);
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ERROR HY000: Variable 'have_innodb' is a GLOBAL variable
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Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@SESSION.have_innodb);
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ERROR HY000: Variable 'have_innodb' is a GLOBAL variable
46
Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@GLOBAL.have_innodb);
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COUNT(@@GLOBAL.have_innodb)
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SELECT have_innodb = @@SESSION.have_innodb;
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ERROR 42S22: Unknown column 'have_innodb' in 'field list'
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Expected error 'Readonly variable'