Edit File: pid_file_basic.result
select @@global.pid_file; @@global.pid_file MYSQLTEST_VARDIR/run/mysqld.1.pid select @@session.pid_file; ERROR HY000: Variable 'pid_file' is a GLOBAL variable show global variables like 'pid_file'; Variable_name Value pid_file MYSQLTEST_VARDIR/run/mysqld.1.pid show session variables like 'pid_file'; Variable_name Value pid_file MYSQLTEST_VARDIR/run/mysqld.1.pid select * from information_schema.global_variables where variable_name='pid_file'; VARIABLE_NAME VARIABLE_VALUE PID_FILE MYSQLTEST_VARDIR/run/mysqld.1.pid select * from information_schema.session_variables where variable_name='pid_file'; VARIABLE_NAME VARIABLE_VALUE PID_FILE MYSQLTEST_VARDIR/run/mysqld.1.pid set global pid_file=1; ERROR HY000: Variable 'pid_file' is a read only variable set session pid_file=1; ERROR HY000: Variable 'pid_file' is a read only variable
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