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#
# MDEV-26249: Crash in in Explain_node::print_explain_for_children while writing to the slow query log
#
set @sql_tmp=@@slow_query_log;
SET GLOBAL slow_query_log = 1;
SET long_query_time = 0.000000;
SET log_slow_verbosity = 'explain';
CREATE TABLE t1 ( id varchar(50), KEY (id)) engine=innodb;
SELECT * FROM (SELECT id FROM t1 GROUP BY id) dt WHERE 1=0;
id
select 1;
1
1
explain
SELECT * FROM (SELECT id FROM t1 GROUP BY id) dt WHERE 1=0;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 DERIVED t1 range NULL id 53 NULL 2 Using index for group-by
SET GLOBAL slow_query_log = @sql_tmp;
drop table t1;
#
# End of 10.4 tests
#
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