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