select @@global.rand_seed2;
ERROR HY000: Variable 'rand_seed2' is a SESSION variable
set session rand_seed2=default;
ERROR 42000: Variable 'rand_seed2' doesn't have a default value
set session rand_seed2=10969771;
select @@session.rand_seed2;
@@session.rand_seed2
10969771
show global variables like 'rand_seed2';
Variable_name Value
show session variables like 'rand_seed2';
Variable_name Value
rand_seed2 10969771
select * from information_schema.global_variables where variable_name='rand_seed2';
VARIABLE_NAME VARIABLE_VALUE
select * from information_schema.session_variables where variable_name='rand_seed2';
VARIABLE_NAME VARIABLE_VALUE
RAND_SEED2 10969771
set session rand_seed2=1;
select @@session.rand_seed2;
@@session.rand_seed2
1
select * from information_schema.global_variables where variable_name='rand_seed2';
VARIABLE_NAME VARIABLE_VALUE
select * from information_schema.session_variables where variable_name='rand_seed2';
VARIABLE_NAME VARIABLE_VALUE
RAND_SEED2 1
set global rand_seed2=1;
ERROR HY000: Variable 'rand_seed2' is a SESSION variable and can't be used with SET GLOBAL
set session rand_seed2=1.1;
ERROR 42000: Incorrect argument type to variable 'rand_seed2'
set session rand_seed2=1e1;
ERROR 42000: Incorrect argument type to variable 'rand_seed2'
set session rand_seed2="foo";
ERROR 42000: Incorrect argument type to variable 'rand_seed2'