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918b6a3e7a
USING THE PLUGIN INTERFACE.
ISSUE: No support for floating-point plugin
system variables.
SOLUTION: Allowing plugins to define and expose floating-point
system variables of type double. MYSQL_SYSVAR_DOUBLE
and MYSQL_THDVAR_DOUBLE are added.
ISSUE: Fractional part of the def, min, max values of system
variables are ignored.
SOLUTION: Adding functions that are used to store the raw
representation of a double in the raw bits of unsigned
longlong in a way that the binary representation
remains the same.
145 lines
4.6 KiB
Text
145 lines
4.6 KiB
Text
CREATE TABLE t1(a int) ENGINE=EXAMPLE;
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Warnings:
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Warning 1286 Unknown storage engine 'EXAMPLE'
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Warning 1266 Using storage engine MyISAM for table 't1'
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DROP TABLE t1;
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INSTALL PLUGIN example SONAME 'ha_example.so';
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INSTALL PLUGIN EXAMPLE SONAME 'ha_example.so';
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ERROR HY000: Function 'EXAMPLE' already exists
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UNINSTALL PLUGIN example;
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INSTALL PLUGIN example SONAME 'ha_example.so';
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CREATE TABLE t1(a int) ENGINE=EXAMPLE;
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SELECT * FROM t1;
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a
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DROP TABLE t1;
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set global example_ulong_var=500;
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set global example_enum_var= e1;
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show status like 'example%';
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Variable_name Value
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example_func_example enum_var is 0, ulong_var is 500, double_var is 8.500000, really
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show variables like 'example%';
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Variable_name Value
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example_double_thdvar 8.500000
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example_double_var 8.500000
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example_enum_var e1
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example_ulong_var 500
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UNINSTALL PLUGIN example;
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UNINSTALL PLUGIN EXAMPLE;
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ERROR 42000: PLUGIN EXAMPLE does not exist
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UNINSTALL PLUGIN non_exist;
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ERROR 42000: PLUGIN non_exist does not exist
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#
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# Bug#32034: check_func_enum() does not check correct values but set it
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# to impossible int val
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#
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INSTALL PLUGIN example SONAME 'ha_example.so';
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SET GLOBAL example_enum_var= e1;
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SET GLOBAL example_enum_var= e2;
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SET GLOBAL example_enum_var= impossible;
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ERROR 42000: Variable 'example_enum_var' can't be set to the value of 'impossible'
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UNINSTALL PLUGIN example;
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INSTALL PLUGIN example SONAME 'ha_example.so';
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select @@session.sql_mode into @old_sql_mode;
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set session sql_mode='';
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set global example_ulong_var=500;
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select @@global.example_ulong_var;
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@@global.example_ulong_var
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500
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set global example_ulong_var=1111;
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Warnings:
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Warning 1292 Truncated incorrect example_ulong_var value: '1111'
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select @@global.example_ulong_var;
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@@global.example_ulong_var
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1000
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set session sql_mode='STRICT_ALL_TABLES';
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set global example_ulong_var=500;
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select @@global.example_ulong_var;
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@@global.example_ulong_var
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500
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set global example_ulong_var=1111;
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ERROR 42000: Variable 'example_ulong_var' can't be set to the value of '1111'
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select @@global.example_ulong_var;
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@@global.example_ulong_var
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500
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set session sql_mode=@old_sql_mode;
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set session old=bla;
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ERROR HY000: Variable 'old' is a read only variable
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UNINSTALL PLUGIN example;
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#
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# Bug #16194302 SUPPORT FOR FLOATING-POINT SYSTEM
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# VARIABLES USING THE PLUGIN INTERFACE.
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#
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INSTALL PLUGIN example SONAME 'ha_example.so';
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SET GLOBAL example_double_var = -0.1;
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Warnings:
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Warning 1292 Truncated incorrect example_double_var value: '-0.1'
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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0.500000
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SET GLOBAL example_double_var = 0.000001;
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Warnings:
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Warning 1292 Truncated incorrect example_double_var value: '0.000001'
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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0.500000
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SET GLOBAL example_double_var = 0.4;
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Warnings:
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Warning 1292 Truncated incorrect example_double_var value: '0.4'
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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0.500000
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SET GLOBAL example_double_var = 123.456789;
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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123.456789
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SET GLOBAL example_double_var = 500;
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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500.000000
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SET GLOBAL example_double_var = 999.999999;
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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999.999999
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SET GLOBAL example_double_var = 1000.51;
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Warnings:
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Warning 1292 Truncated incorrect example_double_var value: '1000.51'
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SELECT @@GLOBAL.example_double_var;
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@@GLOBAL.example_double_var
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1000.500000
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SET SESSION example_double_thdvar = -0.1;
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Warnings:
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Warning 1292 Truncated incorrect example_double_thdvar value: '-0.1'
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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0.500000
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SET SESSION example_double_thdvar = 0.000001;
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Warnings:
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Warning 1292 Truncated incorrect example_double_thdvar value: '0.000001'
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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0.500000
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SET SESSION example_double_thdvar = 0.4;
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Warnings:
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Warning 1292 Truncated incorrect example_double_thdvar value: '0.4'
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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0.500000
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SET SESSION example_double_thdvar = 123.456789;
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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123.456789
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SET SESSION example_double_thdvar = 500;
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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500.000000
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SET SESSION example_double_thdvar = 999.999999;
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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999.999999
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SET SESSION example_double_thdvar = 1000.51;
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Warnings:
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Warning 1292 Truncated incorrect example_double_thdvar value: '1000.51'
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SELECT @@SESSION.example_double_thdvar;
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@@SESSION.example_double_thdvar
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1000.500000
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UNINSTALL PLUGIN example;
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