--disable_warnings
let $ENGINE=`select variable_value from performance_schema.global_variables where variable_name='DEFAULT_STORAGE_ENGINE'`;
--enable_warnings

--disable_warnings
DROP TABLE IF EXISTS t7;
--enable_warnings
CREATE TABLE t7(c1 SET('a','b','c') NULL);
SHOW TABLES;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" ""
SHOW CREATE TABLE t7; DROP TABLE t7; SHOW TABLES;
CREATE TABLE t7(c1 SET('a','b','c') NOT NULL);
SHOW TABLES;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" ""
SHOW CREATE TABLE t7; DROP TABLE t7; SHOW TABLES;