CREATE TABLE valid_values (value varchar(255)) ENGINE=myisam;
INSERT INTO valid_values VALUES(1.0);
INSERT INTO valid_values VALUES(0.0);
INSERT INTO valid_values VALUES(0.5);
CREATE TABLE invalid_values (value varchar(255)) ENGINE=myisam;
INSERT INTO invalid_values VALUES(2.0);
INSERT INTO invalid_values VALUES(-0.5);
INSERT INTO invalid_values VALUES('\'aaa\'');
INSERT INTO invalid_values VALUES('\'bbb\'');
INSERT INTO invalid_values VALUES('\'-1\'');
INSERT INTO invalid_values VALUES('\'101\'');
INSERT INTO invalid_values VALUES('\'484436\'');
INSERT INTO invalid_values VALUES('\'0.5\'');
SET @start_global_value = @@global.ROCKSDB_CACHE_HIGH_PRI_POOL_RATIO;
SELECT @start_global_value;
@start_global_value
0
"Trying to set variable @@global.ROCKSDB_CACHE_HIGH_PRI_POOL_RATIO to 444. It should fail because it is readonly."
SET @@global.ROCKSDB_CACHE_HIGH_PRI_POOL_RATIO   = 444;
ERROR HY000: Variable 'rocksdb_cache_high_pri_pool_ratio' is a read only variable
DROP TABLE valid_values;
DROP TABLE invalid_values;