#
# This is a test for EXPLAINs being written into slow query log.
# For now, we just run the queries and hope not to crash.
# 
#
--disable_warnings
drop table if exists t0,t1;
--enable_warnings

create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

explain select * from t0 where a < 3;

--echo # 
--echo # MDEV-5045: Server crashes in QPF_query::print_explain with log_slow_verbosity='query_plan,explain'
--echo # 
set autocommit=1;
drop table t0;

--echo # 
--echo # MDEV-5047 virtual THD::~THD(): Assertion `status_var.memory_used == 0' fails on disconnect
--echo # 
--connect (con1,localhost,root,,)
--error ER_NO_SUCH_TABLE
ALTER TABLE nonexisting ENABLE KEYS;
SHOW WARNINGS;
--disconnect con1
--connection default
SELECT 1;

--echo #
--echo # MDEV-5060 Server crashes on EXPLAIN EXTENDED or EXPLAIN PARTITIONS with explain in slow_log
--echo #
EXPLAIN PARTITIONS SELECT 1 ;


--echo #
--echo # MDEV-5106: Server crashes in Explain_union::print_explain on ER_TOO_BIG_SELECT with explain in slow log
--echo #
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SET max_join_size = 10;
--error ER_TOO_BIG_SELECT
( SELECT ta.* FROM t1 ta, t1 tb ) UNION ( SELECT * FROM t1 );
SELECT 'Server still alive?' as 'Yes';

DROP TABLE t1;

--echo #
--echo # MDEV-5308 Crash when running with slow_query_log=1
--echo #
SET @save1= @@log_slow_rate_limit; 
SET @save2= @@long_query_time; 

SET log_slow_rate_limit=1000; 
SET long_query_time=0.000001; 
SELECT 1; 

SET log_slow_rate_limit=@save1;
SET long_query_time=@save2;