connection node_2;
connection node_1;
CREATE TABLE t1 (a INT);
connect  con1,localhost,root,,test;
INSERT INTO t1 VALUES (1),(2),(3),(4);
SHOW EXPLAIN FOR $con1;
ERROR HY000: Target is not running an EXPLAINable command
connection con1;
INSERT INTO t1 VALUES (5),(6),(7),(8);
DROP TABLE t1;