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32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
select @@global.pseudo_thread_id;
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ERROR HY000: Variable 'pseudo_thread_id' is a SESSION variable
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should be empty
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show global variables like 'pseudo_thread_id';
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Variable_name Value
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show session variables like 'pseudo_thread_id';
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Variable_name Value
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pseudo_thread_id #
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should be empty
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select * from information_schema.global_variables where variable_name='pseudo_thread_id';
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VARIABLE_NAME VARIABLE_VALUE
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select @@session.pseudo_thread_id = variable_value from information_schema.session_variables where variable_name='pseudo_thread_id';
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@@session.pseudo_thread_id = variable_value
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1
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set session pseudo_thread_id=42;
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select @@session.pseudo_thread_id;
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@@session.pseudo_thread_id
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42
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select * from information_schema.global_variables where variable_name='pseudo_thread_id';
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VARIABLE_NAME VARIABLE_VALUE
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select variable_value from information_schema.session_variables where variable_name='pseudo_thread_id';
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variable_value
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42
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set global pseudo_thread_id=1;
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ERROR HY000: Variable 'pseudo_thread_id' is a SESSION variable and can't be used with SET GLOBAL
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set session pseudo_thread_id=1.1;
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ERROR 42000: Incorrect argument type to variable 'pseudo_thread_id'
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set session pseudo_thread_id=1e1;
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ERROR 42000: Incorrect argument type to variable 'pseudo_thread_id'
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set session pseudo_thread_id="foo";
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ERROR 42000: Incorrect argument type to variable 'pseudo_thread_id'
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