1DROP TABLE IF EXISTS t1; 2CREATE TABLE t1 (n INT); 3INSERT INTO t1 VALUES (1),(2),(3); 4SELECT * FROM t1; 5n 61 72 83 9DROP TABLE t1; 10SELECT GET_LOCK("dangling", 0); 11GET_LOCK("dangling", 0) 121 13SELECT GET_LOCK('dangling', 3600);; 14SELECT GET_LOCK('dangling', 3600);; 15SELECT RELEASE_LOCK('dangling'); 16RELEASE_LOCK('dangling') 171 18GET_LOCK('dangling', 3600) 191 20