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2ccf247e93
* rename all debugging related command-line options and variables to start from "debug-", and made them all OFF by default. * replace "MySQL" with "MariaDB" in error messages * "Cast ... converted ... integer to it's ... complement" is now a note, not a warning * @@query_cache_strip_comments now has a session scope, not global.
45 lines
1.8 KiB
Plaintext
45 lines
1.8 KiB
Plaintext
SET @start_global_value = @@global.extra_max_connections;
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select @@global.extra_max_connections;
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@@global.extra_max_connections
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1
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select @@session.extra_max_connections;
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ERROR HY000: Variable 'extra_max_connections' is a GLOBAL variable
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show global variables like 'extra_max_connections';
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Variable_name Value
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extra_max_connections 1
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show session variables like 'extra_max_connections';
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Variable_name Value
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extra_max_connections 1
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select * from information_schema.global_variables where variable_name='extra_max_connections';
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VARIABLE_NAME VARIABLE_VALUE
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EXTRA_MAX_CONNECTIONS 1
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select * from information_schema.session_variables where variable_name='extra_max_connections';
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VARIABLE_NAME VARIABLE_VALUE
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EXTRA_MAX_CONNECTIONS 1
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set global extra_max_connections=1;
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select @@global.extra_max_connections;
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@@global.extra_max_connections
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1
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set session extra_max_connections=1;
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ERROR HY000: Variable 'extra_max_connections' is a GLOBAL variable and should be set with SET GLOBAL
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set global extra_max_connections=1.1;
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ERROR 42000: Incorrect argument type to variable 'extra_max_connections'
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set global extra_max_connections=1e1;
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ERROR 42000: Incorrect argument type to variable 'extra_max_connections'
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set global extra_max_connections="foo";
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ERROR 42000: Incorrect argument type to variable 'extra_max_connections'
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set global extra_max_connections=0;
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Warnings:
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Warning 1292 Truncated incorrect extra_max_connections value: '0'
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select @@global.extra_max_connections;
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@@global.extra_max_connections
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1
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set global extra_max_connections=cast(-1 as unsigned int);
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Warnings:
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Note 1105 Cast to unsigned converted negative integer to it's positive complement
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Warning 1292 Truncated incorrect extra_max_connections value: '18446744073709551615'
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select @@global.extra_max_connections;
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@@global.extra_max_connections
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100000
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SET @@global.extra_max_connections = @start_global_value;
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