# 2011-02-23 - Added # --source include/have_innodb.inc SET @start_global_value = @@global.innodb_flush_neighbors; SELECT @start_global_value; # # exists as global only # select @@global.innodb_flush_neighbors; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_flush_neighbors; show global variables like 'innodb_flush_neighbors'; show session variables like 'innodb_flush_neighbors'; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; # # show that it's writable # set global innodb_flush_neighbors=0; select @@global.innodb_flush_neighbors; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; set @@global.innodb_flush_neighbors=TRUE; select @@global.innodb_flush_neighbors; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; set global innodb_flush_neighbors=0; select @@global.innodb_flush_neighbors; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; set @@global.innodb_flush_neighbors=2; select @@global.innodb_flush_neighbors; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; set @@global.innodb_flush_neighbors=DEFAULT; select @@global.innodb_flush_neighbors; select * from information_schema.global_variables where variable_name='innodb_flush_neighbors'; select * from information_schema.session_variables where variable_name='innodb_flush_neighbors'; --error ER_GLOBAL_VARIABLE set session innodb_flush_neighbors=0; --error ER_GLOBAL_VARIABLE set @@session.innodb_flush_neighbors=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_flush_neighbors='OFF'; --error ER_WRONG_TYPE_FOR_VAR set global innodb_flush_neighbors='ON'; --error ER_WRONG_TYPE_FOR_VAR set global innodb_flush_neighbors=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_flush_neighbors=1e1; set global innodb_flush_neighbors=3; select @@global.innodb_flush_neighbors; set global innodb_flush_neighbors=-3; select @@global.innodb_flush_neighbors; --error ER_WRONG_TYPE_FOR_VAR set global innodb_flush_neighbors='AUTO'; # # Cleanup # SET @@global.innodb_flush_neighbors = @start_global_value; SELECT @@global.innodb_flush_neighbors;