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43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
# ulong session
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SET @start_global_value = @@global.join_cache_level;
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#
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# exists as global only
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#
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select @@global.join_cache_level;
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select @@session.join_cache_level;
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show global variables like 'join_cache_level';
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show session variables like 'join_cache_level';
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select * from information_schema.global_variables where variable_name='join_cache_level';
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select * from information_schema.session_variables where variable_name='join_cache_level';
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#
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# show that it's writable
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#
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set global join_cache_level=4;
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select @@global.join_cache_level;
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set session join_cache_level=4;
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select @@session.join_cache_level;
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#
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# incorrect types
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#
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--error ER_WRONG_TYPE_FOR_VAR
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set global join_cache_level=1.1;
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--error ER_WRONG_TYPE_FOR_VAR
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set session join_cache_level=1e1;
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--error ER_WRONG_TYPE_FOR_VAR
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set global join_cache_level="foo";
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#
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# min/max values, block size
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#
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set global join_cache_level=0;
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select @@global.join_cache_level;
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set session join_cache_level=cast(-1 as unsigned int);
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select @@session.join_cache_level;
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SET @@global.join_cache_level = @start_global_value;
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