#
# Hash semi-join regression tests
# (WL#1110: Subquery optimization: materialization)
#

--source include/default_optimizer_switch.inc
--source include/have_sequence.inc

set optimizer_switch=ifnull(@subselect_mat_test_optimizer_switch_value, 'semijoin=on,firstmatch=on,loosescan=on,semijoin_with_cache=on');
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
set @optimizer_switch_local_default= @@optimizer_switch;
set @save_join_cache_level=@@join_cache_level;
set join_cache_level=1;

--disable_warnings
drop table if exists t1, t2, t3, t4, t5, t1i, t2i, t3i;
drop table if exists columns;
drop table if exists t1_16, t2_16, t3_16;
drop view if exists v1, v2, v1m, v2m;
--enable_warnings

create table t1 (a1 char(8), a2 char(8));
create table t2 (b1 char(8), b2 char(8));
create table t3 (c1 char(8), c2 char(8));

insert into t1 values ('1 - 00', '2 - 00');
insert into t1 values ('1 - 01', '2 - 01');
insert into t1 values ('1 - 02', '2 - 02');

insert into t2 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 02', '2 - 02');
insert into t2 values ('1 - 02', '2 - 02');
insert into t2 values ('1 - 03', '2 - 03');

insert into t3 values ('1 - 01', '2 - 01');
insert into t3 values ('1 - 02', '2 - 02');
insert into t3 values ('1 - 03', '2 - 03');
insert into t3 values ('1 - 04', '2 - 04');

# Indexed columns
create table t1i (a1 char(8), a2 char(8));
create table t2i (b1 char(8), b2 char(8));
create table t3i (c1 char(8), c2 char(8));
create index it1i1 on t1i (a1);
create index it1i2 on t1i (a2);
create index it1i3 on t1i (a1, a2);

create index it2i1 on t2i (b1);
create index it2i2 on t2i (b2);
create index it2i3 on t2i (b1, b2);

create index it3i1 on t3i (c1);
create index it3i2 on t3i (c2);
create index it3i3 on t3i (c1, c2);

insert into t1i select * from t1;
insert into t2i select * from t2;
insert into t3i select * from t3;
analyze table t1,t2,t3,t1i,t2i,t3i;

# force the use of materialization
set @@optimizer_switch='materialization=on,in_to_exists=off,firstmatch=off';

/******************************************************************************
* Simple tests.
******************************************************************************/
# non-indexed nullable fields
explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
select * from t1 where a1 in (select b1 from t2 where b1 > '0');

explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);

explain extended
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);

explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);

# indexed columns
--replace_column 7 #
--replace_regex /it1.*/_it1_idx/  /test.t2i.*/_ref_/  /Using index$// /Using where$//
explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
select * from t1i where a1 in (select b1 from t2i where b1 > '0');

--replace_column 6 # 8 # 11 #
explain extended
select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);

--replace_column 7 #
--replace_regex /it1.*/_it1_idx/  /test.t2i.*/_ref_/  /Using index$// /Using where$//
explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');

--replace_column 6 # 7 # 8 # 11 #
explain extended
select * from t1i where (a1, a2) in (select b1, max(b2) from t2i where b1 > '0' group by b1);
select * from t1i where (a1, a2) in (select b1, max(b2) from t2i where b1 > '0' group by b1);

--replace_column 6 # 7 # 8 # 11 #
explain extended
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);

# BUG#31639: Wrong plan for uncorrelated subquery when loose scan is applicable.
create table t2i_c like t2i;
insert into t2i_c select * from t2i;
insert into t2i_c select * from t2i;
insert into t2i_c select * from t2i;
insert into t2i_c select * from t2i;
analyze table t2i_c;
show create table t2i_c;
explain extended
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1);
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1);

prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1)";
execute st1;
execute st1;
prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1)";
execute st2;
execute st2;
drop table t2i_c;

explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
-- error 1235
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);

# test re-optimization/re-execution with different execution methods
# prepare once, exec with different modes
set @local_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='semijoin=off';
prepare st1 from
"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='materialization=off,in_to_exists=on';
execute st1;
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='semijoin=off';
execute st1;

set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='materialization=off,in_to_exists=on';
prepare st1 from
"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='semijoin=off';
execute st1;
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='materialization=off,in_to_exists=on';
execute st1;
set @@optimizer_switch=@local_optimizer_switch;

# materialize the result of ORDER BY
# No longer really happens as the optimizer is now smart enough not to sort in this case
# non-indexed fields
explain extended
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
# indexed fields
explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);

/******************************************************************************
* Views, UNIONs, several levels of nesting.
******************************************************************************/
# materialize the result of subquery over temp-table view

create algorithm=merge view v1 as
select b1, c2 from t2, t3 where b2 > c2;

create algorithm=merge view v2 as
select b1, c2 from t2, t3 group by b2, c2;

create algorithm=temptable view v1m as
select b1, c2 from t2, t3 where b2 > c2;

create algorithm=temptable view v2m as
select b1, c2 from t2, t3 group by b2, c2;

select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null);
select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null);

select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null);
select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null);

drop view v1, v2, v1m, v2m;

#--view-protocol is disabled because view gives another query plan
--disable_view_protocol

# nested subqueries, views
explain extended
select * from t1
where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
select * from t1
where (a1, a2) in (select b1, b2 from t2 where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));

--replace_column 6 # 7 # 8 # 11 #
explain extended
select * from t1i
where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3i
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
select * from t1i
where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3i
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));

explain extended
select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
                         b2 in (select c2 from t3 where c2 LIKE '%03')) and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));

# as above with correlated innermost subquery
explain extended
select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 t3a where c1 = a1) or
                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
      (a1, a2) in (select c1, c2 from t3 t3c
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 t3a where c1 = a1) or
                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
      (a1, a2) in (select c1, c2 from t3 t3c
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));


# multiple levels of nesting subqueries, unions
--replace_column 6 # 7 # 8 # 11 #
explain extended
(select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
                         b2 in (select c2 from t3 where c2 LIKE '%03')
                   group by b1, b2) and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
UNION
(select * from t1i
where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3i
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));

(select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 where c2 LIKE '%02') or
                         b2 in (select c2 from t3 where c2 LIKE '%03')
                   group by b1, b2) and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
UNION
(select * from t1i
where (a1, a2) in (select b1, b2 from t2i where b1 >  '0') and
      (a1, a2) in (select c1, c2 from t3i
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));


# UNION of subqueries as a subquery (thus it is not computed via materialization)
explain extended
select * from t1
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
select * from t1
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
      (a1, a2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
# as above, with a join conditon between the outer references
explain extended
select * from t1, t3
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
      (c1, c2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
       a1 = c1;
select * from t1, t3
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
      (c1, c2) in (select c1, c2 from t3
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
       a1 = c1;


/******************************************************************************
* Negative tests, where materialization should not be applied.
******************************************************************************/
# UNION in a subquery
explain extended
select * from t3
where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
select * from t3
where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');

# correlation
explain extended
select * from t1
where (a1, a2) in (select b1, b2 from t2
                   where b2 in (select c2 from t3 t3a where c1 = a1) or
                         b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
      (a1, a2) in (select c1, c2 from t3 t3c
                   where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));

# subquery has no tables
explain extended
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
explain extended
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);

--enable_view_protocol

/******************************************************************************
* Subqueries in other uncovered clauses.
******************************************************************************/

/* SELECT clause */
select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1;

/* GROUP BY clause */
create table columns (col int key);
insert into columns values (1), (2);

explain extended
select * from t1 group by (select col from columns limit 1);
select * from t1 group by (select col from columns limit 1);

explain extended
select * from t1 group by (a1 in (select col from columns));
select * from t1 group by (a1 in (select col from columns));

/* ORDER BY clause */
explain extended
select * from t1 order by (select col from columns limit 1);
select * from t1 order by (select col from columns limit 1);

/******************************************************************************
* Column types/sizes that affect materialization.
******************************************************************************/

/*
  Test that BLOBs are not materialized (except when arguments of some functions).
*/
# force materialization to be always considered
set @prefix_len = 6;

# BLOB == 16 (small blobs that could be stored in HEAP tables)
set @blob_len = 16;
set @suffix_len = @blob_len - @prefix_len;

create table t1_16 (a1 blob(16), a2 blob(16));
create table t2_16 (b1 blob(16), b2 blob(16));
create table t3_16 (c1 blob(16), c2 blob(16));

insert into t1_16 values
 (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
insert into t1_16 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t1_16 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));

insert into t2_16 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t2_16 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t2_16 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));

insert into t3_16 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t3_16 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t3_16 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
insert into t3_16 values
 (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));

# single value transformer
explain extended select left(a1,7), left(a2,7)
from t1_16
where a1 in (select b1 from t2_16 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_16
where a1 in (select b1 from t2_16 where b1 > '0');

# row value transformer
explain extended select left(a1,7), left(a2,7)
from t1_16
where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_16
where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');

# string function with a blob argument, the return type may be != blob
explain extended select left(a1,7), left(a2,7)
from t1_16
where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_16
where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');

# group_concat with a blob argument - depends on
# the variable group_concat_max_len, and
# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
explain extended select left(a1,7), left(a2,7)
from t1_16
where a1 in (select group_concat(b1) from t2_16 group by b2);

select left(a1,7), left(a2,7)
from t1_16
where a1 in (select group_concat(b1) from t2_16 group by b2);

set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)

explain extended select left(a1,7), left(a2,7)
from t1_16
where a1 in (select group_concat(b1) from t2_16 group by b2);

select left(a1,7), left(a2,7)
from t1_16
where a1 in (select group_concat(b1) from t2_16 group by b2);

# BLOB column at the second (intermediate) level of nesting
explain extended
select * from t1
where concat(a1,'x') IN
      (select left(a1,8) from t1_16
       where (a1, a2) IN
             (select t2_16.b1, t2_16.b2 from t2_16, t2
              where t2.b2 = substring(t2_16.b2,1,6) and
                    t2.b1 IN (select c1 from t3 where c2 > '0')));


drop table t1_16, t2_16, t3_16;


# BLOB == 512 (CONVERT_IF_BIGGER_TO_BLOB == 512)
set @blob_len = 512;
set @suffix_len = @blob_len - @prefix_len;

create table t1_512 (a1 blob(512), a2 blob(512));
create table t2_512 (b1 blob(512), b2 blob(512));
create table t3_512 (c1 blob(512), c2 blob(512));

insert into t1_512 values
 (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
insert into t1_512 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t1_512 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));

insert into t2_512 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t2_512 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t2_512 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));

insert into t3_512 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t3_512 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t3_512 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
insert into t3_512 values
 (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));

# single value transformer
explain extended select left(a1,7), left(a2,7)
from t1_512
where a1 in (select b1 from t2_512 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_512
where a1 in (select b1 from t2_512 where b1 > '0');

# row value transformer
explain extended select left(a1,7), left(a2,7)
from t1_512
where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_512
where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');

# string function with a blob argument, the return type may be != blob
explain extended select left(a1,7), left(a2,7)
from t1_512
where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_512
where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');

# group_concat with a blob argument - depends on
# the variable group_concat_max_len, and
# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
explain extended select left(a1,7), left(a2,7)
from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);

select left(a1,7), left(a2,7)
from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);

set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 512)

explain extended select left(a1,7), left(a2,7)
from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);

select left(a1,7), left(a2,7)
from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);

drop table t1_512, t2_512, t3_512;


# BLOB == 1024 (group_concat_max_len == 1024)
set @blob_len = 1024;
set @suffix_len = @blob_len - @prefix_len;

create table t1_1024 (a1 blob(1024), a2 blob(1024));
create table t2_1024 (b1 blob(1024), b2 blob(1024));
create table t3_1024 (c1 blob(1024), c2 blob(1024));

insert into t1_1024 values
 (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
insert into t1_1024 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t1_1024 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));

insert into t2_1024 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t2_1024 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t2_1024 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));

insert into t3_1024 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t3_1024 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t3_1024 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
insert into t3_1024 values
 (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));

# single value transformer
explain extended select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select b1 from t2_1024 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select b1 from t2_1024 where b1 > '0');

# row value transformer
explain extended select left(a1,7), left(a2,7)
from t1_1024
where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1024
where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');

# string function with a blob argument, the return type may be != blob
explain extended select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');

# group_concat with a blob argument - depends on
# the variable group_concat_max_len, and
# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
explain extended select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);

select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);

set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1024)

explain extended select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);

select left(a1,7), left(a2,7)
from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);

drop table t1_1024, t2_1024, t3_1024;


# BLOB == 1025
set @blob_len = 1025;
set @suffix_len = @blob_len - @prefix_len;

create table t1_1025 (a1 blob(1025), a2 blob(1025));
create table t2_1025 (b1 blob(1025), b2 blob(1025));
create table t3_1025 (c1 blob(1025), c2 blob(1025));

insert into t1_1025 values
 (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
insert into t1_1025 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t1_1025 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));

insert into t2_1025 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t2_1025 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t2_1025 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));

insert into t3_1025 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t3_1025 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t3_1025 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
insert into t3_1025 values
 (concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));

# single value transformer
explain extended select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select b1 from t2_1025 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select b1 from t2_1025 where b1 > '0');

# row value transformer
explain extended select left(a1,7), left(a2,7)
from t1_1025
where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1025
where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');

# string function with a blob argument, the return type may be != blob
explain extended select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');

select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');

# group_concat with a blob argument - depends on
# the variable group_concat_max_len, and
# convert_blob_length == max_len*collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB
explain extended select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);

select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);

set @@group_concat_max_len = 256; # anything < (CONVERT_IF_BIGGER_TO_BLOB = 1025)

explain extended select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);

select left(a1,7), left(a2,7)
from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);

drop table t1_1025, t2_1025, t3_1025;

# test for BIT fields
create table t1bit (a1 bit(3), a2 bit(3));
create table t2bit (b1 bit(3), b2 bit(3));

insert into t1bit values (b'000', b'100');
insert into t1bit values (b'001', b'101');
insert into t1bit values (b'010', b'110');

insert into t2bit values (b'001', b'101');
insert into t2bit values (b'010', b'110');
insert into t2bit values (b'110', b'111');

explain extended select bin(a1), bin(a2)
from t1bit
where (a1, a2) in (select b1, b2 from t2bit);

select bin(a1), bin(a2)
from t1bit
where (a1, a2) in (select b1, b2 from t2bit);

drop table t1bit, t2bit;

# test mixture of BIT and BLOB
create table t1bb (a1 bit(3), a2 blob(3));
create table t2bb (b1 bit(3), b2 blob(3));

insert into t1bb values (b'000', '100');
insert into t1bb values (b'001', '101');
insert into t1bb values (b'010', '110');

insert into t2bb values (b'001', '101');
insert into t2bb values (b'010', '110');
insert into t2bb values (b'110', '111');

explain extended select bin(a1), a2
from t1bb
where (a1, a2) in (select b1, b2 from t2bb);

select bin(a1), a2
from t1bb
where (a1, a2) in (select b1, b2 from t2bb);

drop table t1bb, t2bb;
drop table t1, t2, t3, t1i, t2i, t3i, columns;

/******************************************************************************
* Test the cache of the left operand of IN.
******************************************************************************/

# Test that default values of Cached_item are not used for comparison
create table t1 (s1 int);
create table t2 (s2 int);
insert into t1 values (5),(1),(0);
insert into t2 values (0), (1);
select s2 from t2 where s2 in (select s1 from t1);
drop table t1, t2;

create table t1 (a int not null, b int not null);
create table t2 (c int not null, d int not null);
create table t3 (e int not null);

# the first outer row has no matching inner row
insert into t1 values (1,10);
insert into t1 values (1,20);
insert into t1 values (2,10);
insert into t1 values (2,20);
insert into t1 values (2,30);
insert into t1 values (3,20);
insert into t1 values (4,40);

insert into t2 values (2,10);
insert into t2 values (2,20);
insert into t2 values (2,40);
insert into t2 values (3,20);
insert into t2 values (4,10);
insert into t2 values (5,10);

insert into t3 values (10);
insert into t3 values (10);
insert into t3 values (20);
insert into t3 values (30);

explain extended
select a from t1 where a in (select c from t2 where d >= 20);
select a from t1 where a in (select c from t2 where d >= 20);

create index it1a on t1(a);

explain extended
select a from t1 where a in (select c from t2 where d >= 20);
select a from t1 where a in (select c from t2 where d >= 20);

# the first outer row has a matching inner row
insert into t2 values (1,10);

explain extended
select a from t1 where a in (select c from t2 where d >= 20);
select a from t1 where a in (select c from t2 where d >= 20);

# cacheing for IN predicates inside a having clause - here the cached
# items are changed to point to temporary tables.
explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
select a from t1 group by a having a in (select c from t2 where d >= 20);

# create an index that can be used for the outer query GROUP BY 
create index iab on t1(a, b);
explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
select a from t1 group by a having a in (select c from t2 where d >= 20);

#--view-protocol is disabled because view gives another query plan
--disable_view_protocol

explain extended
select a from t1 group by a
having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
select a from t1 group by a
having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
explain extended
select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e));
select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e));
--enable_view_protocol

drop table t1, t2, t3;

#
# BUG#36133 "Assertion `exec_method != MATERIALIZATION || (exec_method == MATERIALIZATION &&"
#
create table t2 (a int, b int, key(a), key(b));
insert into t2 values (3,3),(3,3),(3,3);
select 1 from t2 where  
    t2.a > 1 
  or 
    t2.a = 3 and not t2.a not in (select t2.b from t2);
drop table t2;

#
# BUG#37896 Assertion on entry of Item_in_subselect::exec on subquery with AND NOT
#
create table t1 (a1 int key);
create table t2 (b1 int);
insert into t1 values (5);

# Query with group by, executed via materialization
explain select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
# Query with group by, executed via IN=>EXISTS
set @local_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='materialization=off,in_to_exists=on';
explain select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);

# Executed with materialization
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='semijoin=off';
explain select min(a1) from t1 where 7 in (select b1 from t2);
select min(a1) from t1 where 7 in (select b1 from t2);
# Executed with semi-join. Notice, this time we get a different result (NULL).
# This is the only correct result of all four queries. This difference is
# filed as BUG#40037.
set @@optimizer_switch=@optimizer_switch_local_default;
set @@optimizer_switch='materialization=off,in_to_exists=on';
-- echo # with MariaDB and MWL#90, this particular case is solved:
explain select min(a1) from t1 where 7 in (select b1 from t2);
select min(a1) from t1 where 7 in (select b1 from t2);
-- echo # but when we go around MWL#90 code, the problem still shows up:
explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
set @@optimizer_switch= @local_optimizer_switch;
drop table t1,t2;

#
# BUG#36752 "subquery materialization produces wrong results when comparing different types"
#
create table t1 (a char(2), b varchar(10));
insert into t1 values ('a',  'aaa');
insert into t1 values ('aa', 'aaaa');

explain select a,b from t1 where b in (select a from t1);
select a,b from t1 where b in (select a from t1);
prepare st1 from "select a,b from t1 where b in (select a from t1)";
execute st1;
execute st1;
drop table t1;

--echo #
--echo # BUG#49630: Segfault in select_describe() with double 
--echo #            nested subquery and materialization
--echo #

CREATE TABLE t1 (t1i int);
CREATE TABLE t2 (t2i int);
CREATE TABLE t3 (t3i int);
CREATE TABLE t4 (t4i int);

INSERT INTO t1 VALUES (1); # Note: t1 must be const table
INSERT INTO t2 VALUES (1),(2);
INSERT INTO t3 VALUES (1),(2);
INSERT INTO t4 VALUES (1),(2);

--echo
EXPLAIN 
SELECT t1i
FROM t1 JOIN t4 ON t1i=t4i  
WHERE (t1i)  IN (  
   SELECT t2i
   FROM t2  
   WHERE (t2i)  IN (  
     SELECT max(t3i)
     FROM t3  
     GROUP BY t3i
     )  
 );

DROP TABLE t1,t2,t3,t4;


#
# Bug #52538 Valgrind bug: Item_in_subselect::init_left_expr_cache()
#
CREATE TABLE t1 (
  pk INTEGER AUTO_INCREMENT,
  col_int_nokey INTEGER,
  col_int_key INTEGER,

  col_varchar_key VARCHAR(1),

  PRIMARY KEY (pk),
  KEY (col_int_key),
  KEY (col_varchar_key, col_int_key)
)
;

INSERT INTO t1 (
  col_int_key, col_int_nokey, col_varchar_key
) 
VALUES
(2, NULL, 'w'),
(9, 7, 'm'),
(3, 9, 'm'),
(9, 7, 'k'),
(NULL, 4, 'r'),
(9, 2, 't'),
(3, 6, 'j'),
(8, 8, 'u'),
(8, NULL, 'h'),
(53, 5, 'o'),
(0, NULL, NULL),
(5, 6, 'k'),
(166, 188, 'e'),
(3, 2, 'n'),
(0, 1, 't'),
(1, 1, 'c'),
(9, 0, 'm'),
(5, 9, 'y'),
(6, NULL, 'f'),
(2, 4, 'd')
;

SELECT table2.col_varchar_key AS field1,
       table2.col_int_nokey AS field2
FROM ( t1 AS table1 LEFT OUTER JOIN t1 AS table2
       ON (table2.col_varchar_key = table1.col_varchar_key  ) ) 
WHERE table1.pk = 6
HAVING  ( field2 ) IN 
( SELECT SUBQUERY2_t2.col_int_nokey AS SUBQUERY2_field2 
  FROM ( t1 AS SUBQUERY2_t1 JOIN t1 AS SUBQUERY2_t2
         ON (SUBQUERY2_t2.col_varchar_key = SUBQUERY2_t1.col_varchar_key ) ) )
ORDER BY field2 
;

drop table t1;


--echo #
--echo # BUG#53103: MTR test ps crashes in optimize_cond() 
--echo #            when running with --debug
--echo #

CREATE TABLE t1(track varchar(15));

INSERT INTO t1 VALUES ('CAD'), ('CAD');

PREPARE STMT FROM
"SELECT 1 FROM t1
  WHERE
        track IN (SELECT track FROM t1
                                    GROUP BY track 
                                      HAVING track>='CAD')";
EXECUTE STMT ;
EXECUTE STMT ;

DEALLOCATE PREPARE STMT;
DROP TABLE t1; 

--echo # End of BUG#53103

--echo #
--echo # BUG#54511 - Assertion failed: cache != 0L in file 
--echo #             sql_select.cc::sub_select_cache on HAVING
--echo #

CREATE TABLE t1 (i int(11));
CREATE TABLE t2 (c char(1));
CREATE TABLE t3 (c char(1));

# These records are needed for the test to fail with MyISAM. The test
# fails with InnoDB without these (difference due to optimization of
# aggregates available only in MyISAM)
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES ('a'), ('b');
INSERT INTO t3 VALUES ('x'), ('y');

SELECT COUNT( i ),i
FROM t1
HAVING ('c')  
  IN (SELECT t2.c FROM (t2 JOIN t3));

DROP TABLE t1,t2,t3;

--echo # End BUG#54511

--echo #
--echo # BUG#56367 - Assertion exec_method != EXEC_MATERIALIZATION...
--echo #             on subquery in FROM
--echo #

CREATE TABLE t1 (a INTEGER);

CREATE TABLE t2 (b INTEGER);
INSERT INTO t2 VALUES (1);

set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
let $query =
SELECT a FROM (
  SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1;
eval explain $query;
eval $query;
set optimizer_switch=@tmp_optimizer_switch;

DROP TABLE t1, t2;

--echo # End BUG#56367

--echo #
--echo # Bug#59833 - materialization=on/off leads to different result set
--echo #             when using IN
--echo #

CREATE TABLE t1 (
  pk int NOT NULL,
  f1 int DEFAULT NULL,
  PRIMARY KEY (pk)
) ENGINE=MyISAM;

CREATE TABLE t2 (
  pk int NOT NULL,
  f1 int DEFAULT NULL,
  PRIMARY KEY (pk)
) ENGINE=MyISAM;

INSERT INTO t1 VALUES (10,0);
INSERT INTO t2 VALUES (10,0),(11,0);

let $query=
SELECT * FROM t1 JOIN t2 USING (f1)
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);

eval explain $query;
eval $query;

DROP TABLE t1, t2;

--echo # End Bug#59833

--echo #
--echo # Bug#11852644 - CRASH IN ITEM_REF::SAVE_IN_FIELD ON SELECT DISTINCT
--echo #

CREATE TABLE t1 (
  col_varchar_key varchar(1) DEFAULT NULL,
  col_varchar_nokey varchar(1) DEFAULT NULL,
  KEY col_varchar_key (col_varchar_key)) 
;

INSERT INTO t1 VALUES
('v','v'),('r','r');

CREATE TABLE t2 (
  col_varchar_key varchar(1) DEFAULT NULL,
  col_varchar_nokey varchar(1) DEFAULT NULL,
  KEY col_varchar_key(col_varchar_key)) 
;

INSERT INTO t2 VALUES
('r','r'),('c','c');

CREATE VIEW v3 AS SELECT * FROM t2;

SELECT DISTINCT alias2.col_varchar_key 
FROM t1 AS alias1 JOIN v3 AS alias2 
ON alias2.col_varchar_key = alias1.col_varchar_key
HAVING col_varchar_key IN (SELECT col_varchar_nokey FROM t2)
;

DROP TABLE t1, t2;
DROP VIEW v3;

--echo # End Bug#11852644

--echo
--echo # Bug#12668294 - GROUP BY ON EMPTY RESULT GIVES EMPTY ROW
--echo # INSTEAD OF NULL WHEN MATERIALIZATION ON
--echo

CREATE TABLE t1 (col_int_nokey INT) ENGINE=MEMORY;
CREATE TABLE t2 (col_int_nokey INT) ENGINE=MEMORY;
INSERT INTO t2 VALUES (8),(7);
CREATE TABLE t3 (col_int_nokey INT) ENGINE=MEMORY;
INSERT INTO t3 VALUES (7);

SELECT MIN(t3.col_int_nokey),t1.col_int_nokey AS field3
FROM t3
     LEFT JOIN t1
     ON t1.col_int_nokey
WHERE (194, 200) IN (
                     SELECT SQ4_alias1.col_int_nokey,
                     SQ4_alias2.col_int_nokey
                     FROM t2 AS SQ4_alias1
                          JOIN
                          t2 AS SQ4_alias2
                          ON SQ4_alias2.col_int_nokey = 5
                    )
GROUP BY field3 ;

DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3; 

#
# Bug #44303 Assertion failures in Field_new_decimal::store_decimal
#            when executing materialized InsideOut semijoin
# 
CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM;
INSERT INTO t1 (f1, f2) VALUES (1, 1.789);
INSERT INTO t1 (f1, f2) VALUES (13, 1.454);
INSERT INTO t1 (f1, f2) VALUES (10, 1.668);

CREATE TABLE t2 LIKE t1;
INSERT INTO t2 VALUES (1, 1.789);
INSERT INTO t2 VALUES (13, 1.454);

set @local_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch=@optimizer_switch_local_default;
SET @@optimizer_switch='semijoin=on,materialization=on';
EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
set @@optimizer_switch= @local_optimizer_switch;

DROP TABLE t1, t2;

--echo #
--echo # BUG#46548 IN-subqueries return 0 rows with materialization=on
--echo #
CREATE TABLE t1 (
  pk int,
  a varchar(1),
  b varchar(4),
  c varchar(4),
  d varchar(4),
  PRIMARY KEY (pk)
);
INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
insert into t1 select seq,'x','xxxx','xxxx','xxxx' from seq_10_to_40;

CREATE TABLE t2 LIKE t1;
INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
insert into t2 select -seq,'a','aaaa','aaaa','aaaa' from seq_1_to_20;
insert into t2 select seq,'b','bbbb','bbbb','bbbb' from seq_100_to_200;

set @local_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch=@optimizer_switch_local_default;
SET @@optimizer_switch='semijoin=on,materialization=on';
EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
DROP TABLE t1, t2;
set optimizer_switch=@local_optimizer_switch;

--echo #
--echo # BUG#50019: Wrong result for IN-subquery with materialization
--echo #
create table t1(i int);
insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
create table t2(i int);
insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
create table t3(i int);
insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
set @local_optimizer_switch=@@optimizer_switch;
set session optimizer_switch='materialization=off,in_to_exists=on';
select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
set session optimizer_switch=@local_optimizer_switch;
drop table t1, t2, t3;

#
# Test that the contents of the temp table of a materialized subquery is
# cleaned up between PS re-executions.
#

create table t0 (a int);
insert into t0 values (0),(1),(2);
create table t1 (a int);
insert into t1 values (0),(1),(2);
explain select a, a in (select a from t1) from t0;
select a, a in (select a from t1) from t0;
prepare s from 'select a, a in (select a from t1) from t0';
execute s;
update t1 set a=123;
execute s;
drop table t0, t1;
set optimizer_switch='firstmatch=on';

--echo #
--echo # MWL#90, review feedback: check what happens when the subquery
--echo #   looks like candidate for MWL#90 checking at the first glance
--echo #   but then subselect_hash_sj_engine::init_permanent() discovers
--echo #   that it's not possible to perform duplicate removal for the 
--echo #   selected datatypes, and so materialization isn't applicable after
--echo #   all.
--echo #
set @blob_len = 1024;
set @suffix_len = @blob_len - @prefix_len;

create table t1_1024 (a1 blob(1024), a2 blob(1024));
create table t2_1024 (b1 blob(1024), b2 blob(1024));

insert into t1_1024 values
 (concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
insert into t1_1024 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t1_1024 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));

insert into t2_1024 values
 (concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
insert into t2_1024 values
 (concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
insert into t2_1024 values
 (concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));

explain select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');

drop table t1_1024, t2_1024;

--echo #
--echo # BUG##836491: Crash in Item_field::Item_field from add_ref_to_table_cond() with semijoin+materialization
--echo #

CREATE TABLE t1 (c int, d varchar(1), KEY(d)) ;
INSERT INTO t1 VALUES (2,'x'),(2,'x'),(2,'j'),(2,'c');

CREATE TABLE t2 (a int, d varchar(1)) ;
INSERT INTO t2 VALUES (1,'x');

CREATE TABLE t3 (d varchar(1)) ;
INSERT INTO t3 VALUES ('x'),('x'),('j'),('c');

SELECT t2.a, t1.c
FROM t1, t2
WHERE t2.d IN ( SELECT d FROM t3 )
AND t1.d = t2.d
GROUP BY 1 , 2;

drop table t1,t2,t3;

--echo #
--echo # BUG#836523: Crash in JOIN::get_partial_cost_and_fanout with semijoin+materialization 
--echo #
CREATE TABLE t1 (a varchar(1));
INSERT INTO t1 VALUES ('a'),('a');

CREATE TABLE t2 (a varchar(1));

CREATE TABLE t3 (a int);
INSERT INTO t3 VALUES (1),(2);

CREATE TABLE t4 (a varchar(1));
INSERT INTO t4 VALUES ('a'),('a');

SELECT t1.a
FROM t1
WHERE t1.a IN (
        SELECT t2.a
        FROM t2, t3
)
HAVING a IN (
        SELECT a
        FROM t4
);
DROP TABLE t1, t2, t3, t4;

--echo #
--echo # BUG#836507: Crash in setup_sj_materialization_part1() with semijoin+materialization
--echo #
CREATE TABLE t1 (a int) ;
INSERT IGNORE INTO t1 VALUES (1),(1);

CREATE TABLE t2 (a int);
INSERT INTO t2 VALUES (1);

CREATE TABLE t3 (a int);

CREATE TABLE t4 (a int);
INSERT INTO t4 VALUES (2),(2);

CREATE TABLE t5 (a int);
INSERT INTO t5 VALUES (1);

SELECT * FROM t1
WHERE (a) IN (
        SELECT t5.a
        FROM (
                t2
                LEFT JOIN ( t3 , t4 )
                ON 1 = 1
        )
        JOIN t5
);

DROP TABLE t1,t2,t3,t4,t5;

--echo #
--echo # BUG#836532: Crash in Item_equal_fields_iterator::get_curr_field with semijoin+materialization
--echo #

CREATE TABLE t2 (a int);
INSERT IGNORE INTO t2 VALUES ('a'),('a');

CREATE TABLE t4 (a varchar(1));
INSERT INTO t4 VALUES ('m'),('o');

CREATE TABLE t3 (a varchar(1) , b varchar(1) ) ;
INSERT INTO t3 VALUES ('b','b');

CREATE TABLE t5 (a varchar(1), KEY (a)) ;
INSERT INTO t5 VALUES ('d'),('e');

SELECT *
FROM t2
WHERE t2.a = ALL (
        SELECT t4.a
        FROM t4
        WHERE t4.a IN (
                SELECT t3.a
                FROM t3 , t5
                WHERE ( t5.a = t3.b )
        )
);

DROP TABLE t2,t3,t4,t5;

--echo #
--echo # BUG#860300: Second crash with get_fanout_with_deps() with semijoin + materialization
--echo #
set @tmp_860300=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
CREATE TABLE t1 (f2 int);
INSERT INTO t1 VALUES (9),(6);
CREATE TABLE t3 (f4 int);
CREATE TABLE t4 (f6 varchar(1));

SELECT *
FROM t3
WHERE 'h' IN (SELECT f6 
              FROM t4
              WHERE 5 IN (SELECT f2 FROM t1)
              GROUP BY t4.f6);
DROP TABLE t1,t3,t4;
set optimizer_switch=@tmp_860300;

--echo #
--echo # BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin
--echo #
set @tmp_860535=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
CREATE TABLE t1 (f3 int) ;
INSERT INTO t1 VALUES (1),(7);

CREATE TABLE t2 (f3 int , f5 varchar(1), KEY (f3)) ;
INSERT INTO t2 VALUES (7,'b');

CREATE TABLE t3 (f3 int , f4 varchar(1) , KEY(f3), KEY (f4,f3)) ;
INSERT INTO t3 VALUES (1,'t'),(7,'g');

CREATE TABLE t4
SELECT f3
FROM t1 WHERE ( f3 ) NOT IN (
        SELECT f3
        FROM t2
        WHERE f5 IN (
                SELECT f4
                FROM t3
                WHERE t3.f3 < 3
        )
);
SELECT * FROM t4;
DROP TABLE t1, t2, t3, t4;
set optimizer_switch=@tmp_860535;

--echo #
--echo # BUG#860553: Crash in create_ref_for_key with semijoin + materialization 
--echo #
CREATE TABLE t1 (f1 int) ;
CREATE TABLE t2 (f5 varchar(52) NOT NULL) ;

CREATE TABLE t3 (f1 varchar(3), f4 varchar(52) , KEY (f4), PRIMARY KEY (f1));

CREATE TABLE t4 (f3 int, KEY (f3));
INSERT INTO t4 VALUES (17),(20);

CREATE TABLE t5 (f2 int);
INSERT INTO t5 VALUES (0),(0);

SELECT *
FROM t1
JOIN t2
ON ( t2.f5 ) IN (
        SELECT t3.f4
        FROM t3
        WHERE ( 1 ) IN (
                SELECT t4.f3
                FROM t4 , t5
        )
);

DROP TABLE t1, t2, t3, t4, t5;
--echo #
--echo # BUG#868908: Crash in check_simple_equality() with semijoin + materialization + prepared statement
--echo #

CREATE TABLE t1 ( a int );
CREATE TABLE t3 ( b int, c int) ;
CREATE TABLE t2 ( a int ) ;
CREATE TABLE t4 ( a int , c int) ;

PREPARE st1 FROM "
SELECT STRAIGHT_JOIN *
FROM t1
WHERE ( 3 ) IN (
        SELECT t3.b
        FROM t3
        LEFT JOIN (
                t2 STRAIGHT_JOIN t4 ON ( t4.c = t2.a )
        ) ON ( t4.a = t3.c )
);
";
EXECUTE st1;
EXECUTE st1;
DROP TABLE t1,t2,t3,t4;

--echo #
--echo # BUG#901032: Wrong result for MIN/MAX on an indexed column with materialization and semijoin
--echo #
CREATE TABLE t1 ( a INT, KEY(a) );
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 ( b INT );
INSERT INTO t2 VALUES (2);
CREATE TABLE t3 ( c INT );
INSERT INTO t3 VALUES (2);

SELECT MIN(a) FROM t1, t2 WHERE b IN (SELECT c FROM t3 GROUP BY c);

DROP TABLE t1,t2,t3;

--echo #
--echo #
--echo # BUG#902632: Crash or invalid read at st_join_table::cleanup, st_table::disable_keyread
--echo #
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);
CREATE TABLE t2 ( b INT );
INSERT INTO t2 VALUES (3), (4);
CREATE TABLE t3 ( c INT );
INSERT INTO t3 VALUES (5), (6);

SELECT * FROM t1 WHERE EXISTS (
   SELECT DISTINCT b FROM t2
      WHERE b <= a
        AND b IN ( SELECT c FROM t3 GROUP BY c )
   );
DROP TABLE t1,t2,t3;

--echo #
--echo # BUG#901506: Crash in TABLE_LIST::print on EXPLAIN EXTENDED
--echo #
CREATE TABLE t1 ( a INT, KEY(a) );
INSERT INTO t1 VALUES (8);

EXPLAIN EXTENDED
  SELECT * FROM t1
   WHERE a IN ( SELECT MIN(a) FROM t1 );

DROP TABLE t1;

--echo #
--echo # BUG#904432: Wrong result with LEFT JOIN, constant table, semijoin=ON,materialization=ON
--echo #
CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
INSERT INTO t1 VALUES (4);
CREATE TABLE t2 ( b INT NOT NULL, c INT );
INSERT INTO t2 VALUES (4,2),(4,2),(4,4),(1,1);

SELECT * FROM t1 LEFT JOIN t2 ON ( a = b )
  WHERE a IN ( SELECT c FROM t2 );

DROP TABLE t1,t2;

--echo #
--echo # BUG#922254: Assertion `0' failed at item_cmpfunc.cc:5899: Item* Item_equal::get_first(JOIN_TAB*, Item*)
--echo #
CREATE TABLE t1 ( a VARCHAR(3) );
CREATE TABLE t2 ( b VARCHAR(3), c VARCHAR(8), KEY(c) );
INSERT INTO t2 VALUES ('USA','Abilene'),('USA','Akron');

EXPLAIN
SELECT * FROM
  ( SELECT * FROM t1 ) AS alias1,
  t2 AS alias2
WHERE b = a AND a IN (
  SELECT alias3.c
  FROM t2 AS alias3, t2 AS alias4
  WHERE alias4.c = alias3.b
);

DROP TABLE t1,t2;

--echo #
--echo # BUG#928048: Query containing IN subquery with OR in the where clause returns a wrong result
--echo #
create table t1 (a int, b int);
insert into t1 values (7,5), (3,3), (5,4), (9,3);
insert into t1 select seq,seq from seq_100_to_200;

create table t2 (a int, b int, index i_a(a));

insert into t2 values
  (4,2), (7,9), (7,4), (3,1), (5,3), (3,1), (9,4), (8,1);

explain select * from t1 where t1.a in (select a from t2 where t2.a=7 or t2.b<=1);
select * from t1 where t1.a in (select a from t2 where t2.a=7 or t2.b<=1);

drop table t1,t2;

--echo #
--echo # BUG#933407: Valgrind warnings in mark_as_null_row with materialization+semijoin, STRAIGHT_JOIN, impossible WHERE
--echo #
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0),(8);

SELECT STRAIGHT_JOIN MIN(a) FROM t1
WHERE a IN (
    SELECT a FROM t1
    WHERE 'condition'='impossible'
  );

DROP TABLE t1;

--echo #
--echo # BUG#938131: Subquery materialization is not used in CREATE TABLE SELECT
--echo # 
CREATE TABLE t1(a int);
INSERT INTO t1 values(1),(2);
CREATE TABLE t2(a int);
INSERT INTO t2 values(1),(2);
--echo # Should use Materialization:
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 GROUP BY a HAVING a > 1);
flush status;
CREATE TABLE t3 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 GROUP BY a HAVING a > 1);
--disable_ps_protocol
SHOW STATUS LIKE 'Created_tmp_tables';
--enable_ps_protocol
DROP TABLE t1,t2,t3;

--echo # 
--echo # BUG#939009: Crash with aggregate function in IN subquery 
--echo #

SET @local_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='materialization=on,semijoin=on';

CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (7,1), (4,2), (7,7);

CREATE TABLE t2 ( c INT );
INSERT INTO t2 VALUES (4), (7), (6);

EXPLAIN EXTENDED
SELECT * FROM t1
  WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b);
SELECT * FROM t1
  WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b);

EXPLAIN
SELECT * FROM t1
  WHERE a IN (SELECT MAX(c) FROM t2 WHERE c < 4) AND b=7 AND (a IS NULL OR a=b);
SELECT * FROM t1
  WHERE a IN (SELECT MAX(c) FROM t2 WHERE c < 4) AND b=7 AND (a IS NULL OR a=b);

SET optimizer_switch=@local_optimizer_switch;

DROP TABLE t1,t2;

--echo # 
--echo # BUG#946055: Crash with semijoin IN subquery when hash join is used
--echo #

CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (7);

CREATE TABLE t2 (b int, c int, d varchar(1), e varchar(1), KEY (c), KEY (d, c));

INSERT INTO t2 VALUES 
  (4,2,'v','v'), (6,1,'v','v'), (0,5,'x','x'), (7,1,'x','x'),
  (7,3,'i','i'), (7,1,'e','e'), (1,4,'p','p'), (1,2,'j','j');

SET @local_optimizer_switch=@@optimizer_switch;

SET join_cache_level=2;
EXPLAIN
SELECT a, c FROM t1, t2
  WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
                     WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
SELECT a, c FROM t1, t2
  WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
                     WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));

SET optimizer_switch='join_cache_hashed=on';
SET join_cache_level=4;
EXPLAIN
SELECT a, c FROM t1, t2
  WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
                     WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
SELECT a, c FROM t1, t2
  WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
                     WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));

SET optimizer_switch=@local_optimizer_switch;
SET join_cache_level=@save_join_cache_level;

DROP TABLE t1,t2;

--echo #
--echo # BUG#952297: Server crashes on 2nd execution of PS in Field::is_null with semijoin+materialization
--echo #
CREATE TABLE t1 ( a VARCHAR(1) );
INSERT INTO t1 VALUES ('y'),('z');

CREATE TABLE t2 ( b VARCHAR(1), c VARCHAR(1) );
INSERT INTO t2 VALUES ('v','v'),('v','v');

CREATE VIEW v2 AS SELECT * FROM t2;

PREPARE ps FROM '
SELECT a FROM t1, v2
WHERE ( c, b ) IN ( SELECT b, b FROM t2 )
GROUP BY a ';

EXECUTE ps;
EXECUTE ps;

DROP VIEW v2;
DROP TABLE t1, t2;

--echo #
--echo # BUG#1000269: Wrong result (extra rows) with semijoin+materialization, IN subqueries, join_cache_level>0
--echo #
CREATE TABLE t1 (a1 VARCHAR(1), a2 VARCHAR(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('b','b'),('e','e');

CREATE TABLE t2 (b1 VARCHAR(1), b2 VARCHAR(1), KEY(b1)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('v','v'),('s','s'),('l','l'), ('y','y'),('c','c'),('i','i');

SELECT * FROM t1, t2 WHERE b1 IN ( SELECT b2 FROM t2 WHERE b1 > 'o' ) AND ( b1 < 'l' OR a1 IN ('b','c') );

DROP TABLE t1,t2;

--echo #
--echo # MDEV-4465: Reproducible crash (mysqld got signal 11) in multi_delete::initialize_tables with semijoin+materialization
--echo #
CREATE TABLE t1 (
  id int(11) NOT NULL
);

CREATE TABLE t2 (
  id   int(11) NOT NULL,
  a_id int(11) DEFAULT NULL
);

insert into t1 values (1), (2), (3);
insert into t2 values (1, 1), (2, 1), (3, 1), (4, 2), (5, 3), (6, 3), (7, 3);

delete t2 from t2 where a_id in (select * from (select t1.id from t1 limit 2) as x);

drop table t1,t2;

--echo # This must be at the end:
set optimizer_switch=@save_optimizer_switch;
set join_cache_level=@save_join_cache_level;

--echo #
--echo # MDEV-4908: Assertion `((Item_cond *) cond)->functype() == 
--echo # ((Item_cond *) new_item)->functype()' fails on a query with
--echo # IN and equal conditions, AND/OR, materialization+semijoin
--echo # 


SET @local_optimizer_switch=@@optimizer_switch;
SET optimizer_switch = 'materialization=on,semijoin=on';

CREATE TABLE t1 (pk INT, a INT, b INT, PRIMARY KEY(pk)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,3,5),(2,4,6);
SELECT * FROM t1 WHERE 8 IN ( SELECT MIN(pk) FROM t1 ) AND ( pk = a OR pk = b );

drop table t1;
SET optimizer_switch=@local_optimizer_switch;

--echo #
--echo # MDEV-5011: ERROR Plugin 'MEMORY' has ref_count=1 after shutdown for SJM queries
--echo #
CREATE TABLE t1 (pk INT, a INT, b INT, PRIMARY KEY(pk)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,3,5),(2,4,6);
SELECT * FROM t1 WHERE 8 IN (SELECT MIN(pk) FROM t1) AND (pk = a OR pk = b);
DROP TABLE t1;

--echo # 
--echo #  MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd 
--echo #    execution of PS with IN subqueries, materialization+semijoin
--echo # 
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(3);

CREATE TABLE t2 (b INT) ENGINE=MyISAM;
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2;
INSERT INTO t2 VALUES (8),(9);

PREPARE stmt FROM "
SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) )
";

EXECUTE stmt;
EXECUTE stmt;
DROP TABLE t1, t2;
DROP VIEW v2;

--echo #
--echo # MDEV-5811: Server crashes in best_access_path with materialization+semijoin and big_tables=ON
--echo #
set tmp_memory_table_size=0; # force on-disk tmp table

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2);

CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (3),(4);

SELECT * FROM t1 AS t1_1, t1 AS t1_2 
  WHERE ( t1_1.a, t1_2.a ) IN ( SELECT MAX(b), MIN(b) FROM t2 );

DROP TABLE t1,t2;
set tmp_memory_table_size=default;

--echo # End of 5.3 tests


--echo #
--echo # MDEV-5056: Wrong result (extra rows) with materialization+semijoin, IN subqueries
--echo #
set @tmp_mdev5056=@@join_cache_level;
SET join_cache_level = 2;

CREATE TABLE t1 ( c1 VARCHAR(2), c2 VARCHAR(2), INDEX(c1) ) ENGINE=MyISAM;
INSERT INTO t1 VALUES 
('JP','OM'),('VA','JP'),('CA','ML'),('ML','EG'),('DK','CA'),
('DK','QA'),('YE','PL'),('TR','ZW'),('DK','SK'),('SK','DK'),
('RO','ML'),('ML','BG'),('BG','ZW'),('ZW','GE'),('GE','JP'),
('PL','EG'),('QA','YE'),('WF','DK'),('DK','JP'),('EG','OM');

CREATE TABLE t2 ( c3 VARCHAR(2), c4 VARCHAR(2) ) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('CA','ML'),('IN','HU'),('HU','IN');

SELECT * FROM t1 AS alias1, t1 AS alias2 
WHERE ( alias2.c2, alias1.c1 ) IN ( SELECT c4, c3 FROM t2 ) AND alias1.c1 IN ( SELECT c2 FROM t1 );

DROP TABLE t1,t2;
set join_cache_level=@tmp_mdev5056;

--echo # 
--echo #  MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd 
--echo #    execution of PS with IN subqueries, materialization+semijoin
--echo # 
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(3);

CREATE TABLE t2 (b INT) ENGINE=MyISAM;
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2;
INSERT INTO t2 VALUES (8),(9);

PREPARE stmt FROM "
SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) )
";

EXECUTE stmt;
EXECUTE stmt;
DROP TABLE t1, t2;
DROP VIEW v2;

--echo #
--echo # MDEV-6289 : Unexpected results when querying information_schema
--echo #
CREATE TABLE t1 (
  id int(11) unsigned NOT NULL AUTO_INCREMENT,
  db varchar(254) NOT NULL DEFAULT '',
  PRIMARY KEY (id),
  UNIQUE KEY db (db)
) DEFAULT CHARSET=utf8;
INSERT INTO t1 (db) VALUES ('mysqltest1'),('mysqltest2'),('mysqltest3'),('mysqltest4');

--disable_warnings
drop database if exists mysqltest1;
drop database if exists mysqltest2;
drop database if exists mysqltest3;
drop database if exists mysqltest4;
--enable_warnings
create database mysqltest1;
create database mysqltest2;
create database mysqltest3;
create database mysqltest4;

SELECT db FROM t1 WHERE db IN (SELECT SCHEMA_NAME FROM information_schema.schemata) ORDER BY db DESC;

EXPLAIN EXTENDED
SELECT db FROM t1 WHERE db IN (SELECT SCHEMA_NAME FROM information_schema.schemata) ORDER BY db DESC;

drop table t1;
drop database mysqltest1;
drop database mysqltest2;
drop database mysqltest3;
drop database mysqltest4;

--echo #
--echo # MDEV-7810 Wrong result on execution of a query as a PS
--echo # (both 1st and further executions)

CREATE TABLE t1 (a INT NOT NULL) ENGINE=MyISAM;
INSERT INTO t1 VALUES (0),(8);

SELECT a FROM (SELECT DISTINCT * FROM t1) AS sq WHERE a IN (SELECT MIN(t2.a) FROM (t1 AS t2));
PREPARE stmt FROM "
SELECT a FROM (SELECT DISTINCT * FROM t1) AS sq WHERE a IN (SELECT MIN(t2.a) FROM (t1 AS t2))
";
execute stmt;
execute stmt;

drop table t1;

--echo #
--echo # MDEV-12429: IN subquery used in WHERE of EXISTS subquery
--echo #

CREATE TABLE t1 (
  pk INT, f1 INT NOT NULL, f2 VARCHAR(3), f3 INT NULL, PRIMARY KEY(pk)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,1,'foo',8), (2,5,'bar',7);
create table t2 like t1;
insert into t2 select * from t1;

SELECT sq1.f2    FROM t1 AS sq1
  WHERE EXISTS ( SELECT * FROM t2 AS sq2
                   WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );

set @local_optimizer_switch= @@optimizer_switch;

set optimizer_switch='exists_to_in=off';
EXPLAIN
SELECT sq1.f2    FROM t1 AS sq1
  WHERE EXISTS ( SELECT * FROM t1 AS sq2
                   WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );

--echo # this checks the result set above
set optimizer_switch= 'materialization=off,semijoin=off';
SELECT sq1.f2    FROM t1 AS sq1
  WHERE EXISTS ( SELECT * FROM t2 AS sq2
                   WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );

set optimizer_switch= @local_optimizer_switch;

DROP TABLE t1,t2;

--echo #
--echo # MDEV-12145: IN subquery used in WHERE of EXISTS subquery
--echo #

CREATE TABLE t1 (f1 INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (4),(6);

CREATE TABLE t2 (i2 INT, KEY(i2)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (8),(7),(1);

CREATE TABLE t3 (f3 INT, i3 INT, KEY(i3)) ENGINE=MyISAM;
INSERT INTO t3 VALUES (8,0),(6,3),(2,8),(3,8),(1,6),(0,0),(1,0),(1,5);

set @local_optimizer_switch= @@optimizer_switch;

set optimizer_switch='exists_to_in=off';
SELECT * FROM t1
  WHERE EXISTS ( SELECT * FROM t2, t3
                   WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );
EXPLAIN EXTENDED
SELECT * FROM t1
  WHERE EXISTS ( SELECT * FROM t2, t3
                   WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );

--echo # this checks the result set above
set optimizer_switch= 'materialization=off,semijoin=off';
SELECT * FROM t1
  WHERE EXISTS ( SELECT * FROM t2, t3
                   WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );

set optimizer_switch= @local_optimizer_switch;

DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-9686: IN subquery used in WHERE of a subquery from select list
--echo #

CREATE TABLE t1 (pk INT PRIMARY KEY, f1 INT);
INSERT INTO t1 VALUES (1, 4),(2, 3),(3, 3),(4, 6),(5, 3);

CREATE TABLE t2 (f2 INT);
INSERT INTO t2 VALUES (1),(2),(3),(4),(5);

--echo # t1.pk is always IN ( SELECT f2 FROM t2 ),
--echo # so the IN condition should be true for every row,
--echo # and thus COUNT(*) should always return 5

SELECT pk, f1, ( SELECT COUNT(*) FROM t2
                   WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;
EXPLAIN EXTENDED
SELECT pk, f1, ( SELECT COUNT(*) FROM t2
                   WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;

--echo # this checks the result set above
set @local_optimizer_switch= @@optimizer_switch;
set optimizer_switch= 'materialization=off,semijoin=off';
SELECT pk, f1, ( SELECT COUNT(*) FROM t2
                   WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;
set optimizer_switch= @local_optimizer_switch;

DROP TABLE t1,t2;

--echo #
--echo # mdev-12838: scan of materialized of semi-join subquery in join
--echo #

set @local_optimizer_switch=@@optimizer_switch;

CREATE TABLE t1 (
  dispatch_group varchar(32),
  assignment_group varchar(32),
  sys_id char(32),
  PRIMARY KEY (sys_id),
  KEY idx1 (dispatch_group),
  KEY idx2 (assignment_group)
) ENGINE=MyISAM;

CREATE TABLE t2 (
  ugroup varchar(32),
  user varchar(32),
  sys_id char(32),
  PRIMARY KEY (sys_id),
  KEY idx3 (ugroup),
  KEY idx4 (user)
) ENGINE=MyISAM;

CREATE TABLE t3 (
  type mediumtext,
  sys_id char(32),
  PRIMARY KEY (sys_id)
) ENGINE=MyISAM;

--disable_query_log

INSERT INTO t1 VALUES 
('e5d9f63237232000158bbfc8bcbe5dbf','f304ae0037332000158bbfc8bcbe5d4f',
'5398c0e037003000158bbfc8bcbe5dbb'),
('69d9f63237232000158bbfc8bcbe5dcb','7172ea0037332000158bbfc8bcbe5db6',
'5c188ca037003000158bbfc8bcbe5dbc'),
('577ed708d773020058c92cf65e61037a','699708d4d773020058c92cf65e61037c',
'623a8cd4d773020058c92cf65e6103ea'),
('96fb652637232000158bbfc8bcbe5db4','df50316637232000158bbfc8bcbe5d23',
'6835bd6637232000158bbfc8bcbe5d21'),
('e1d9f63237232000158bbfc8bcbe5db8','96346e0037332000158bbfc8bcbe5daa',
'697880e037003000158bbfc8bcbe5dcd'),
('25d9f63237232000158bbfc8bcbe5dbe','f304ae0037332000158bbfc8bcbe5d4f',
'6a9804e037003000158bbfc8bcbe5d09'),
('96fb652637232000158bbfc8bcbe5db4','e08fad2637232000158bbfc8bcbe5d39',
'6d25f96637232000158bbfc8bcbe5d79'),
('e9d9f63237232000158bbfc8bcbe5dc6','7172ea0037332000158bbfc8bcbe5db6',
'702880e037003000158bbfc8bcbe5d94'),
('a5d9f63237232000158bbfc8bcbe5dca','f304ae0037332000158bbfc8bcbe5d4f',
'7188c0e037003000158bbfc8bcbe5d75'),
('65d9f63237232000158bbfc8bcbe5dc4','f304ae0037332000158bbfc8bcbe5d4f',
'778880e037003000158bbfc8bcbe5d9e'),
('a1d9f63237232000158bbfc8bcbe5dc3','7172ea0037332000158bbfc8bcbe5db6',
'7d0840e037003000158bbfc8bcbe5dde'),
('21d9f63237232000158bbfc8bcbe5db7','96346e0037332000158bbfc8bcbe5daa',
'7f6880e037003000158bbfc8bcbe5da7'),
('96fb652637232000158bbfc8bcbe5db4','ec70316637232000158bbfc8bcbe5d60',
'8025f96637232000158bbfc8bcbe5dd0'),
('3dd9f63237232000158bbfc8bcbe5dcc','7172ea0037332000158bbfc8bcbe5db6',
'823880e037003000158bbfc8bcbe5ded'),
('96fb652637232000158bbfc8bcbe5db4','7b10fd2637232000158bbfc8bcbe5d30',
'9a353d6637232000158bbfc8bcbe5dee'),
('75d9f63237232000158bbfc8bcbe5dd0','ebb4620037332000158bbfc8bcbe5d89',
'a558c0e037003000158bbfc8bcbe5d36'),
('6dd9f63237232000158bbfc8bcbe5db5','96346e0037332000158bbfc8bcbe5daa',
'bc78cca037003000158bbfc8bcbe5d74'),
('add9f63237232000158bbfc8bcbe5dc7','7172ea0037332000158bbfc8bcbe5db6',
'c53804a037003000158bbfc8bcbe5db8'),
('fdd9f63237232000158bbfc8bcbe5dcd','7864ae0037332000158bbfc8bcbe5db8',
'cfe740e037003000158bbfc8bcbe5de8'),
('96fb652637232000158bbfc8bcbe5db4','3120fd2637232000158bbfc8bcbe5d42',
'e2257d6637232000158bbfc8bcbe5ded'),
('3c3725e237232000158bbfc8bcbe5da1','96346e0037332000158bbfc8bcbe5daa',
'ee78c0e037003000158bbfc8bcbe5db5'),
('a9d9f63237232000158bbfc8bcbe5dc0','7172ea0037332000158bbfc8bcbe5db6',
'f00888a037003000158bbfc8bcbe5dd3'),
('29d9f63237232000158bbfc8bcbe5db9','7172ea0037332000158bbfc8bcbe5db6',
'fa0880e037003000158bbfc8bcbe5d70'),
('b1d9f63237232000158bbfc8bcbe5dcf','ebb4620037332000158bbfc8bcbe5d89',
'fa48c0e037003000158bbfc8bcbe5d28');

INSERT INTO t2 VALUES
('17801ac21b13200050fdfbcd2c0713e8','8e826bf03710200044e0bfc8bcbe5d86',
'14c19a061b13200050fdfbcd2c07134b'),
('577ed708d773020058c92cf65e61037a','931644d4d773020058c92cf65e61034c',
'339888d4d773020058c92cf65e6103aa'),
('df50316637232000158bbfc8bcbe5d23','92826bf03710200044e0bfc8bcbe5da9',
'3682f56637232000158bbfc8bcbe5d44'),
('b4f342b237232000158bbfc8bcbe5def','86826bf03710200044e0bfc8bcbe5d70',
'38e4c2b237232000158bbfc8bcbe5dea'),
('7b10fd2637232000158bbfc8bcbe5d30','8a826bf03710200044e0bfc8bcbe5d72',
'4442b56637232000158bbfc8bcbe5d43'),
('3120fd2637232000158bbfc8bcbe5d42','82826bf03710200044e0bfc8bcbe5d89',
'49d2396637232000158bbfc8bcbe5d12'),
('96fb652637232000158bbfc8bcbe5db4','86826bf03710200044e0bfc8bcbe5d79',
'4e3ca52637232000158bbfc8bcbe5d3e'),
('17801ac21b13200050fdfbcd2c0713e8','824fd523bf4320007a6d257b3f073963',
'58c19a061b13200050fdfbcd2c07134e'),
('699708d4d773020058c92cf65e61037c','901784d4d773020058c92cf65e6103da',
'5bc708d4d773020058c92cf65e6103d5'),
('75d9f63237232000158bbfc8bcbe5dd0','86826bf03710200044e0bfc8bcbe5d79',
'6b52cb7237232000158bbfc8bcbe5ded'),
('f253da061b13200050fdfbcd2c0713ab','8e826bf03710200044e0bfc8bcbe5d86',
'81045e061b13200050fdfbcd2c071373'),
('7b10fd2637232000158bbfc8bcbe5d30','8e826bf03710200044e0bfc8bcbe5d74',
'8c42b56637232000158bbfc8bcbe5d3f'),
('e5d9f63237232000158bbfc8bcbe5dbf','7a826bf03710200044e0bfc8bcbe5df5',
'a7acfe3237232000158bbfc8bcbe5d78'),
('8a5055c9c61122780043563ef53438e3','9ee1b13dc6112271007f9d0efdb69cd0',
'a9aff553c6112276015a8006174bee21'),
('8a4dde73c6112278017a6a4baf547aa7','9ee1b13dc6112271007f9d0efdb69cd0',
'a9b2f526c61122760003ae07349d294f'),
('aaccc971c0a8001500fe1ff4302de101','9ee1b13dc6112271007f9d0efdb69cd0',
'aacceed3c0a80015009069bba51c4e21'),
('65d9f63237232000158bbfc8bcbe5dc4','8d56406a0a0a0a6b004070b354aada28',
'ac1bfa3237232000158bbfc8bcbe5dc3'),
('b85d44954a3623120004689b2d5dd60a','97000fcc0a0a0a6e0104ca999f619e5b',
'b77bc032cbb00200d71cb9c0c24c9c45'),
('220f8e71c61122840197e57c33464f70','8d56406a0a0a0a6b004070b354aada28',
'b9b74f080a0a0b343ba75b95bdb27056'),
('e08fad2637232000158bbfc8bcbe5d39','82826bf03710200044e0bfc8bcbe5d80',
'be02756637232000158bbfc8bcbe5d8b'),
('ebb4620037332000158bbfc8bcbe5d89','7682abf03710200044e0bfc8bcbe5d25',
'c0122f4437732000158bbfc8bcbe5d7d'),
('96fb652637232000158bbfc8bcbe5db4','7a82abf03710200044e0bfc8bcbe5d27',
'c23ca52637232000158bbfc8bcbe5d3b'),
('22122b37c611228400f9ff91c857581d','9ee1b13dc6112271007f9d0efdb69cd0',
'd23bbf5dac14641866947512bde59dc5'),
('db53a9290a0a0a650091abebccf833c6','9ee1b13dc6112271007f9d0efdb69cd0',
'db54a0f60a0a0a65002c54dcb72b4f41'),
('e08fad2637232000158bbfc8bcbe5d39','8e826bf03710200044e0bfc8bcbe5d86',
'f602756637232000158bbfc8bcbe5d88'),
('699708d4d773020058c92cf65e61037c','8d59d601d7b3020058c92cf65e6103c2',
'f718a241d7b3020058c92cf65e610332'),
('df50316637232000158bbfc8bcbe5d23','9e826bf03710200044e0bfc8bcbe5da6',
'fe82f56637232000158bbfc8bcbe5d4e'),
('f972d6061b13200050fdfbcd2c0713e5','780395f0df031100a9e78b6c3df2631f',
'ff4395f0df031100a9e78b6c3df2637e');

INSERT INTO t3 VALUES 
('87245e061b13200050fdfbcd2c0713cc','7172ea0037332000158bbfc8bcbe5db6'),
('74af88c6c611227d0066386e74dc853d','74ad1ff3c611227d01d25feac2af603f'),
('59e22fb137032000158bbfc8bcbe5d52','75d9f63237232000158bbfc8bcbe5dd0'),
('98906fb137032000158bbfc8bcbe5d65','781da52637232000158bbfc8bcbe5db8'),
('87245e061b13200050fdfbcd2c0713cc','7864ae0037332000158bbfc8bcbe5db8'),
('87245e061b13200050fdfbcd2c0713cc','7b10fd2637232000158bbfc8bcbe5d30'),
('59e22fb137032000158bbfc8bcbe5d52','81a880e037003000158bbfc8bcbe5df8'),
('74af88c6c611227d0066386e74dc853d','8a4cb6d4c61122780043b1642efcd52b'),
('1cb8ab9bff500200158bffffffffff62','8a4dde73c6112278017a6a4baf547aa7'),
('1cb8ab9bff500200158bffffffffff62','8a5055c9c61122780043563ef53438e3'),
('87245e061b13200050fdfbcd2c0713cc','96346e0037332000158bbfc8bcbe5daa'),
('59e22fb137032000158bbfc8bcbe5d52','96fb652637232000158bbfc8bcbe5db4'),
('59e22fb137032000158bbfc8bcbe5d52','a1d9f63237232000158bbfc8bcbe5dc3'),
('59e22fb137032000158bbfc8bcbe5d52','a5d9f63237232000158bbfc8bcbe5dca'),
('1cb8ab9bff500200158bffffffffff62','a715cd759f2002002920bde8132e7018'),
('59e22fb137032000158bbfc8bcbe5d52','a9d9f63237232000158bbfc8bcbe5dc0'),
('74af88c6c611227d0066386e74dc853d','aacb62e2c0a80015007f67f752c2b12c'),
('74af88c6c611227d0066386e74dc853d','aaccc971c0a8001500fe1ff4302de101'),
('59e22fb137032000158bbfc8bcbe5d52','add9f63237232000158bbfc8bcbe5dbb'),
('59e22fb137032000158bbfc8bcbe5d52','add9f63237232000158bbfc8bcbe5dc7'),
('59e22fb137032000158bbfc8bcbe5d52','b1d9f63237232000158bbfc8bcbe5dcf'),
('1cb8ab9bff500200158bffffffffff62','b85d44954a3623120004689b2d5dd60a'),
('1cb8ab9bff500200158bffffffffff62','b97e89b94a36231201676b73322a0311'),
('1cb8ab9bff500200158bffffffffff62','cfcbad03d711110050f5edcb9e61038f'),
('1cb8ab9bff500200158bffffffffff62','d625dccec0a8016700a222a0f7900d06'),
('1cb8ab9bff500200158bffffffffff62','db53580b0a0a0a6501aa37c294a2ba6b'),
('1cb8ab9bff500200158bffffffffff62','db53a9290a0a0a650091abebccf833c6'),
('1cb8ab9bff500200158bffffffffff62','dc0db135c332010016194ffe5bba8f23'),
('87245e061b13200050fdfbcd2c0713cc','df50316637232000158bbfc8bcbe5d23'),
('87245e061b13200050fdfbcd2c0713cc','e08fad2637232000158bbfc8bcbe5d39'),
('59e22fb137032000158bbfc8bcbe5d52','e1d9f63237232000158bbfc8bcbe5db8'),
('59e22fb137032000158bbfc8bcbe5d52','e5d9f63237232000158bbfc8bcbe5db4'),
('59e22fb137032000158bbfc8bcbe5d52','e5d9f63237232000158bbfc8bcbe5dbf'),
('59e22fb137032000158bbfc8bcbe5d52','e9d9f63237232000158bbfc8bcbe5dba'),
('59e22fb137032000158bbfc8bcbe5d52','e9d9f63237232000158bbfc8bcbe5dc6'),
('87245e061b13200050fdfbcd2c0713cc','ebb4620037332000158bbfc8bcbe5d89'),
('87245e061b13200050fdfbcd2c0713cc','ec70316637232000158bbfc8bcbe5d60'),
('87245e061b13200050fdfbcd2c0713cc','f253da061b13200050fdfbcd2c0713ab'),
('87245e061b13200050fdfbcd2c0713cc','f304ae0037332000158bbfc8bcbe5d4f'),
('98906fb137032000158bbfc8bcbe5d65','f972d6061b13200050fdfbcd2c0713e5'),
('59e22fb137032000158bbfc8bcbe5d52','fdd9f63237232000158bbfc8bcbe5dcd');

--enable_query_log

let $q=
SELECT t1.assignment_group
FROM t1, t3
WHERE t1.assignment_group = t3.sys_id AND
      t1.dispatch_group IN
      (SELECT t2.ugroup
       FROM t2, t3 t3_i
       WHERE t2.ugroup = t3_i.sys_id AND 
             t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
             t2.user = '86826bf03710200044e0bfc8bcbe5d79');

set optimizer_switch='materialization=off';
eval explain $q;
eval $q;

set optimizer_switch='materialization=on';
eval explain $q;
eval set statement optimizer_prune_level=1 for explain $q;
eval $q;

DROP TABLE t1,t2,t3;
set optimizer_switch=@local_optimizer_switch;

--echo #
--echo # MDEV-16751: Server crashes in st_join_table::cleanup or 
--echo # TABLE_LIST::is_with_table_recursive_reference with join_cache_level>2
--echo #

set @save_join_cache_level= @@join_cache_level;
set join_cache_level=4;
CREATE TABLE t1 ( id int NOT NULL);
INSERT INTO t1 VALUES (11),(12),(13),(14),(15),(16),(17),(18),(19);
 
CREATE TABLE t2 (i1 int NOT NULL, i2 int NOT NULL) ;
INSERT INTO t2 VALUES  (11,11),(12,12),(13,13);

explain
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);

set @@join_cache_level= @save_join_cache_level;
alter table t1 add key(id);

explain
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);

drop table t1,t2;

--echo #
--echo # MDEV-15454: Nested SELECT IN returns wrong results
--echo #

CREATE TABLE t1 ( a int NOT NULL PRIMARY KEY);

CREATE TABLE t2 ( a int, b int );
INSERT INTO t2  VALUES (7878, 96),(3465, 96),(1403, 96),(4189, 96),(8732, 96), (5,96);

CREATE TABLE t3 (c int unsigned NOT NULL, b int unsigned NOT NULL, PRIMARY KEY (c,b));
INSERT INTO t3 (c, b) VALUES (27, 96);

DELIMITER $$;
CREATE PROCEDURE prepare_data()
BEGIN
  DECLARE i INT DEFAULT 1;
  WHILE i < 1000 DO
    INSERT INTO t1 (a) VALUES (i);
    INSERT INTO t2 (a,b) VALUES (i,56);
    INSERT INTO t3 (c,b) VALUES (i,i);
    SET i = i + 1;
  END WHILE;
END$$
DELIMITER ;$$

CALL prepare_data();

SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27);

set @local_optimizer_switch= @@optimizer_switch;
SET optimizer_switch='materialization=off';

SELECT t1.a FROM t1
WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27)) LIMIT 5;

SET optimizer_switch='materialization=on';

SELECT t1.a FROM t1
WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27)) LIMIT 5;

drop procedure prepare_data;
set @@optimizer_switch= @local_optimizer_switch;
drop table t1,t2,t3;

CREATE TABLE t1 ( id int NOT NULL, key(id));
INSERT INTO t1 select seq from seq_11_to_39;
CREATE TABLE t2 (i1 int NOT NULL, i2 int NOT NULL);
INSERT INTO t2 select seq,seq+1 from seq_11_to_50;
CREATE VIEW v1 AS SELECT t2.i1 FROM t2 where t2.i1 = t2.i2;
explain SELECT 1 FROM t1 where t1.id IN (SELECT v1.i1 from v1);
SELECT 1 FROM t1 where t1.id IN (SELECT v1.i1 from v1);
drop table t1,t2;
drop view v1;


--echo #
--echo # MDEV-19580: function invocation in the left part of IN subquery
--echo #

create table t1 (id int, a varchar(50), b int);
insert into t1 values
(1,'mrs',2), (2,'joe',2), (3,'paul',1), (4,'art',1);

create table t2 (id int, a varchar(50), x int);
insert into t2 values
(1,'grand',1),(2,'average',1),(3,'serf',0);

create table t3 (d1 date, d2 date, t1_id int, t2_id int );
insert into t3 values
('1972-01-01','1988-12-31',3,1), ('1972-01-01','1988-12-31',4,1),
('1972-01-01','1988-12-31',1,2), ('1972-01-01','1988-12-31',2,3);

create table t4 ( id int, a varchar(50) );
insert into t4 values
(1,'songwriter'),(2,'song character');

delimiter $$;

create function f1(who int, dt date) returns int
deterministic
begin
    declare result int;
    select t2_id into result from t3 where dt>=d1 and dt<=d2 and t1_id=who;
    return result;
end$$

create function f2(who int, dt date) returns int
begin
    declare result int;
    select t2_id into result from t3 where dt>=d1 and dt<=d2 and t1_id=who;
    return result;
end$$

delimiter ;$$

--echo # Deterministic function in left part of IN subquery: semi-join is OK

let $q1=
select * from t1
    left join t4 on t1.b = t4.id
    where f1(t1.id, '1980-01-01') in (select id from t2 where x=1);

eval $q1;
eval explain extended $q1;

--echo # Non-deterministic function in left part of IN subq: semi-join is OK

let $q2=
select * from t1
    left join t4 on t1.b = t4.id
    where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);

eval $q2;
eval explain extended $q2;

let $q3=
select t1.*, t4.*,
       (select max(t4.id) from t4 where t4.id=t1.b and sleep(0) = 0) as s
    from t1 left join t4 on t1.b = t4.id
    where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);

eval $q3;
eval explain extended $q3;

drop function f1;
drop function f2;
drop table t1,t2,t3,t4;

--echo # End of 5.5 tests
--echo #
--echo # MDEV-7220: Materialization strategy is not used for REPLACE ... SELECT
--echo #
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

create table t1 (a int, b int, c int);
insert into t1 
select A.a+B.a*10+C.a*100, A.a+B.a*10+C.a*100, A.a+B.a*10+C.a*100
from t0 A, t0 B, t0 C;

create table t2 (a int, b int, c int);
insert into t2 select A.a, A.a, A.a from t1 A;
insert into t2 select * from t2;
insert into t2 select * from t2;

create table t3 as select * from t2 limit 1;

--echo # The testcase only makes sense if the following uses Materialization:
explain
select * from t1 where (a,b) in (select max(a),b from t2 group by b);

flush status;
replace into t3 
select * from t1 where (a,b) in (select max(a),b from t2 group by b);
--echo #  Sequential reads:
--echo #    1K is read from t1
--echo #    4K is read from t2
--echo #    1K groups is read from the tmp. table
--echo #
--echo #  Lookups:
--echo #    4K lookups in group by table
--echo #    1K lookups in temp.table
--echo #
--echo #  Writes:
--echo #    2x 1K writes to temporary tables (grouping table and subquery materialization table
--echo #
--echo #  The point is that neither counter should be in the millions (this
--echo #     will happen if Materialization is not used 
show status where Variable_name like 'Handler_read%' or  Variable_name like 'Handler_%write%';

drop table t0,t1,t2,t3;

--echo #
--echo # MDEV-7971: Assertion `name != __null' failed in ACL_internal_schema_registry::lookup 
--echo #            on 2nd execution os PS with multi-table update
--echo #
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES (1),(2);

CREATE TABLE t2 (f2 INT);
INSERT INTO t2 VALUES (3),(4);

CREATE TABLE t3 (f3 INT);
INSERT INTO t3 VALUES (5),(6);

PREPARE stmt FROM '
  UPDATE t1, t2 
  SET f1 = 5
  WHERE 8 IN ( SELECT MIN(f3) FROM t3 )
';

EXECUTE stmt;
EXECUTE stmt;

DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-10389: Query returns different results on a debug vs non-debug build of the same revision
--echo #
CREATE TABLE t1 (i1 INT, i2 INT NOT NULL);
INSERT INTO t1 VALUES (1,4),(2,6);

SELECT * FROM t1 AS alias1
WHERE alias1.i1 IN (
    SELECT i1 FROM t1 WHERE alias1.i2 IN ( SELECT i2 FROM t1 HAVING i2 <> 7 )
);
DROP TABLE t1;