File: subselect_no_semijoin.test

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# 
# Run subselect.test without semi-join optimization (test materialize)
#
set @optimizer_switch_for_subselect_test='semijoin=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; 

set join_cache_level=1;
set @join_cache_level_for_subselect_test=@@join_cache_level;

--source subselect.test

--echo #
--echo # MDEV-19714: JOIN::pseudo_bits_cond is not visible in EXPLAIN FORMAT=JSON
--echo #
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1),(5);

# t2 must be MyISAM or Aria and contain 1 row
CREATE TABLE t2 ( b INT ) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1);

CREATE TABLE t3 ( c INT );
INSERT INTO t3 VALUES (4),(5);

SET @tmp19714=@@optimizer_switch;
SET optimizer_switch='subquery_cache=off';

--source include/explain-no-costs.inc
explain format=json
SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1;

SET optimizer_switch=@tmp19714;

drop table t1,t2,t3;

set @optimizer_switch_for_subselect_test=null; 
set @join_cache_level_for_subselect_test=NULL;