54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
# Displaying default value
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SELECT COUNT(@@GLOBAL.have_statement_timeout);
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COUNT(@@GLOBAL.have_statement_timeout)
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1
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1 Expected
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# Check if Value can set
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SET @@GLOBAL.have_statement_timeout=1;
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ERROR HY000: Variable 'have_statement_timeout' is a read only variable
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Expected error 'Read only variable'
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SELECT COUNT(@@GLOBAL.have_statement_timeout);
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COUNT(@@GLOBAL.have_statement_timeout)
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1
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1 Expected
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# Check if the value in GLOBAL Table matches value in variable
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SELECT @@GLOBAL.have_statement_timeout = VARIABLE_VALUE
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FROM performance_schema.global_variables
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WHERE VARIABLE_NAME='have_statement_timeout';
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@@GLOBAL.have_statement_timeout = VARIABLE_VALUE
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1
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1 Expected
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SELECT COUNT(@@GLOBAL.have_statement_timeout);
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COUNT(@@GLOBAL.have_statement_timeout)
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1
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1 Expected
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SELECT COUNT(VARIABLE_VALUE)
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FROM performance_schema.global_variables
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WHERE VARIABLE_NAME='have_statement_timeout';
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COUNT(VARIABLE_VALUE)
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1
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1 Expected
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# Check if accessing variable with and without GLOBAL point to same variable
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SELECT @@have_statement_timeout = @@GLOBAL.have_statement_timeout;
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@@have_statement_timeout = @@GLOBAL.have_statement_timeout
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1
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1 Expected
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# Check if have_statement_timeout can be accessed with and without @@ sign
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SELECT COUNT(@@have_statement_timeout);
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COUNT(@@have_statement_timeout)
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1
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1 Expected
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SELECT COUNT(@@local.have_statement_timeout);
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ERROR HY000: Variable 'have_statement_timeout' is a GLOBAL variable
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Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@SESSION.have_statement_timeout);
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ERROR HY000: Variable 'have_statement_timeout' is a GLOBAL variable
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Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@GLOBAL.have_statement_timeout);
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COUNT(@@GLOBAL.have_statement_timeout)
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1
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1 Expected
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SELECT have_statement_timeout = @@SESSION.have_statement_timeout;
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ERROR 42S22: Unknown column 'have_statement_timeout' in 'field list'
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Expected error 'Readonly variable'
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