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select @@global.secure_file_priv;
@@global.secure_file_priv
MYSQLTEST_VARDIR/
select @@session.secure_file_priv;
ERROR HY000: Variable 'secure_file_priv' is a GLOBAL variable
show global variables like 'secure_file_priv';
Variable_name Value
secure_file_priv MYSQLTEST_VARDIR/
show session variables like 'secure_file_priv';
Variable_name Value
secure_file_priv MYSQLTEST_VARDIR/
select * from information_schema.global_variables where variable_name='secure_file_priv';
VARIABLE_NAME VARIABLE_VALUE
SECURE_FILE_PRIV MYSQLTEST_VARDIR/
select * from information_schema.session_variables where variable_name='secure_file_priv';
VARIABLE_NAME VARIABLE_VALUE
SECURE_FILE_PRIV MYSQLTEST_VARDIR/
set global secure_file_priv=1;
ERROR HY000: Variable 'secure_file_priv' is a read only variable
set session secure_file_priv=1;
ERROR HY000: Variable 'secure_file_priv' is a read only variable
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