1CREATE TABLE valid_values (value varchar(255)) ENGINE=myisam; 2INSERT INTO valid_values VALUES(1); 3INSERT INTO valid_values VALUES(0); 4INSERT INTO valid_values VALUES('on'); 5INSERT INTO valid_values VALUES('off'); 6INSERT INTO valid_values VALUES('true'); 7INSERT INTO valid_values VALUES('false'); 8CREATE TABLE invalid_values (value varchar(255)) ENGINE=myisam; 9INSERT INTO invalid_values VALUES('\'aaa\''); 10INSERT INTO invalid_values VALUES('\'bbb\''); 11SET @start_global_value = @@global.ROCKSDB_CACHE_INDEX_AND_FILTER_WITH_HIGH_PRIORITY; 12SELECT @start_global_value; 13@start_global_value 141 15"Trying to set variable @@global.ROCKSDB_CACHE_INDEX_AND_FILTER_WITH_HIGH_PRIORITY to 444. It should fail because it is readonly." 16SET @@global.ROCKSDB_CACHE_INDEX_AND_FILTER_WITH_HIGH_PRIORITY = 444; 17ERROR HY000: Variable 'rocksdb_cache_index_and_filter_with_high_priority' is a read only variable 18DROP TABLE valid_values; 19DROP TABLE invalid_values; 20