DROP TABLE IF EXISTS t1;
SET GLOBAL innodb_file_per_table=ON;
SHOW VARIABLES LIKE 'innodb_lazy_drop_table';
Variable_name	Value
innodb_lazy_drop_table	0
SET GLOBAL innodb_lazy_drop_table=1;
SHOW VARIABLES LIKE 'innodb_lazy_drop_table';
Variable_name	Value
innodb_lazy_drop_table	1
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
DROP TABLE t1;
SET GLOBAL innodb_lazy_drop_table=default;
SET GLOBAL innodb_file_per_table=default;