# For explain
set @@join_buffer_size=256*1024;
set @save_optimizer_switch=@@optimizer_switch;

create table t1 (a int, b int);
create table t2 (c int, d int);
insert into t1 values (1,1),(2,2);
insert into t2 values (2,2),(3,3);

(select a,b from t1) intersect (select c,d from t2);

drop tables t1,t2;


create table t1 (a int, b int) engine=MyISAM;
create table t2 (c int, d int) engine=MyISAM;
create table t3 (e int, f int) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3),(4,4);
insert into t3 values (1,1),(2,2),(5,5);

(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
EXPLAIN (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
EXPLAIN extended (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
EXPLAIN extended select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
--source include/explain-no-costs.inc
EXPLAIN format=json (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
--source include/analyze-format.inc
ANALYZE format=json (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
--source include/analyze-format.inc
ANALYZE format=json select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;

prepare stmt from "(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);";
execute stmt;
execute stmt;

prepare stmt from "select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a";
execute stmt;
execute stmt;

(select a,b from t1) intersect (select c,e from t2,t3);
EXPLAIN (select a,b from t1) intersect (select c,e from t2,t3);
EXPLAIN extended (select a,b from t1) intersect (select c,e from t2,t3);
EXPLAIN extended select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;
set @@optimizer_switch='optimize_join_buffer_size=off';
--source include/explain-no-costs.inc
EXPLAIN format=json (select a,b from t1) intersect (select c,e from t2,t3);
--source include/analyze-format.inc
ANALYZE format=json (select a,b from t1) intersect (select c,e from t2,t3);
--source include/analyze-format.inc
ANALYZE format=json select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;
set @@optimizer_switch=@save_optimizer_switch;
select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;

prepare stmt from "(select a,b from t1) intersect (select c,e from t2,t3);";
execute stmt;
execute stmt;

prepare stmt from "select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a";
execute stmt;
execute stmt;


drop tables t1,t2,t3;


select 1 as a from dual intersect select 1 from dual;
(select 1 from dual) intersect (select 1 from dual);
--error ER_PARSE_ERROR
(select 1 from dual into @v) intersect (select 1 from dual);
--error ER_PARSE_ERROR
select 1 from dual ORDER BY 1 intersect select 1 from dual;

select 1 as a from dual union all select 1 from dual;



create table t1 (a int, b blob, a1 int, b1 blob);
create table t2 (c int, d blob, c1 int, d1 blob);
insert into t1 values (1,"ddd", 1, "sdfrrwwww"),(2, "fgh", 2, "dffggtt");
insert into t2 values (2, "fgh", 2, "dffggtt"),(3, "ffggddd", 3, "dfgg");

(select a,b,b1 from t1) intersect (select c,d,d1 from t2);

drop tables t1,t2;

create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3),(4,4);
insert into t3 values (1,1),(2,2),(5,5);

(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;

prepare stmt from "(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);";
execute stmt;
execute stmt;

prepare stmt from "select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a";
execute stmt;
execute stmt;

# make sure that blob is used
create table t4  (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
show create table t4;

drop tables t1,t2,t3,t4;

create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(2,2),(3,3);


--sorted_result
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
--sorted_result
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4) except (select 2,2);

drop tables t1,t2,t3;

create table t1 (a int, b int);
create table t2 (c int, d int);
create table t3 (e int, f int);
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(2,2),(3,3);

--sorted_result
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
--sorted_result
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4) except (select 2,2);

drop tables t1,t2,t3;


--echo #
--echo # INTERSECT precedence
--echo #
create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (5,5),(6,6);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(3,3);

--sorted_result
(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
explain extended
(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);


# test result of linear mix operation 
--sorted_result
(select e,f from t3) intersect (select c,d from t2) union (select a,b from t1) union (select 4,4);
explain extended
(select e,f from t3) intersect (select c,d from t2) union (select a,b from t1) union (select 4,4);

--sorted_result
(/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) union /* select#3 */ select `__3`.`c` AS `c`,`__3`.`d` AS `d` from ((/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (/* select#4 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)) `__3` union (/* select#5 */ select 4 AS `4`,4 AS `4`);

--sorted_result
prepare stmt from "(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4)";
execute stmt;
execute stmt;

create view v1 as (select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);

--sorted_result
select b,a,b+1 from v1;
--sorted_result
select b,a,b+1 from v1 where a > 3;

create procedure p1()
  select * from v1;
--sorted_result
call p1();
--sorted_result
call p1();
drop procedure p1;

create procedure p1()
  (select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
--sorted_result
call p1();
--sorted_result
call p1();
drop procedure p1;

show create view v1;

drop view v1;
drop tables t1,t2,t3;

--echo #
--echo # MDEV-14346:incorrect result of intersect with ANY/ALL/IN subquery
--echo #
CREATE TABLE t (i INT);
INSERT INTO t VALUES (1),(2);
SELECT * FROM t WHERE i != ANY ( SELECT 6 INTERSECT SELECT 3 );

select i from t where
   exists ((select 6 as r from dual having t.i <> 6)
           intersect
           (select 3 from dual having t.i <> 3));

drop table t;


--echo #
--echo # MDEV-13749: Server crashes in _ma_unique_hash /
--echo # JOIN_CACHE::generate_full_extensions on INTERSECT
--echo #

CREATE TABLE t1 (a varchar(32)) ENGINE=MyISAM;
INSERT INTO t1 VALUES
('Jakarta'),('Lisbon'),('Honolulu'),('Lusaka'),('Barcelona'),('Taipei'),
('Brussels'),('Orlando'),('Osaka'),('Quito'),('Lima'),('Tunis'),
('Unalaska'),('Rotterdam'),('Zagreb'),('Ufa'),('Ryazan'),('Xiamen'),
('London'),('Izmir'),('Samara'),('Bern'),('Zhengzhou'),('Vladivostok'),
('Yangon'),('Victoria'),('Warsaw'),('Luanda'),('Leon'),('Bangkok'),
('Wellington'),('Zibo'),('Qiqihar'),('Delhi'),('Hamburg'),('Ottawa'),
('Vaduz');

CREATE TABLE t2 (b varchar(32)) ENGINE=MyISAM;
INSERT INTO t2 VALUES
('Gaza'),('Jeddah'),('Beirut'),('Incheon'),('Tbilisi'),('Izmir'),
('Quito'),('Riga'),('Freetown'),('Zagreb'),('Caracas'),('Orlando'),
('Kingston'),('Turin'),('Xinyang'),('Osaka'),('Albany'),('Geneva'),
('Omsk'),('Kazan'),('Quezon'),('Indore'),('Odessa'),('Xiamen'),
('Winnipeg'),('Yakutsk'),('Nairobi'),('Ufa'),('Helsinki'),('Vilnius'),
('Aden'),('Liverpool'),('Honolulu'),('Frankfurt'),('Glasgow'),
('Vienna'),('Jackson'),('Jakarta'),('Sydney'),('Oslo'),('Novgorod'),
('Norilsk'),('Izhevsk'),('Istanbul'),('Nice');

CREATE TABLE t3 (c varchar(32)) ENGINE=MyISAM;
INSERT INTO t3 VALUES
('Nicosia'),('Istanbul'),('Richmond'),('Stockholm'),('Dublin'),
('Wichita'),('Warsaw'),('Glasgow'),('Winnipeg'),('Irkutsk'),('Quito'),
('Xiamen'),('Berlin'),('Rome'),('Denver'),('Dallas'),('Kabul'),
('Prague'),('Izhevsk'),('Tirana'),('Sofia'),('Detroit'),('Sorbonne');

select count(*) from (
  SELECT * FROM t1 LEFT OUTER JOIN t2 LEFT OUTER JOIN t3 ON b < c ON a > b
  INTERSECT
  SELECT * FROM t1 LEFT OUTER JOIN t2 LEFT OUTER JOIN t3 ON b < c ON a > b
) a;

drop table t1,t2,t3;

CREATE TABLE t1 (a varchar(32) not null) ENGINE=MyISAM;
INSERT INTO t1 VALUES
('Jakarta'),('Lisbon'),('Honolulu'),('Lusaka'),('Barcelona'),('Taipei'),
('Brussels'),('Orlando'),('Osaka'),('Quito'),('Lima'),('Tunis'),
('Unalaska'),('Rotterdam'),('Zagreb'),('Ufa'),('Ryazan'),('Xiamen'),
('London'),('Izmir'),('Samara'),('Bern'),('Zhengzhou'),('Vladivostok'),
('Yangon'),('Victoria'),('Warsaw'),('Luanda'),('Leon'),('Bangkok'),
('Wellington'),('Zibo'),('Qiqihar'),('Delhi'),('Hamburg'),('Ottawa'),
('Vaduz');

CREATE TABLE t2 (b varchar(32) not null) ENGINE=MyISAM;
INSERT INTO t2 VALUES
('Gaza'),('Jeddah'),('Beirut'),('Incheon'),('Tbilisi'),('Izmir'),
('Quito'),('Riga'),('Freetown'),('Zagreb'),('Caracas'),('Orlando'),
('Kingston'),('Turin'),('Xinyang'),('Osaka'),('Albany'),('Geneva'),
('Omsk'),('Kazan'),('Quezon'),('Indore'),('Odessa'),('Xiamen'),
('Winnipeg'),('Yakutsk'),('Nairobi'),('Ufa'),('Helsinki'),('Vilnius'),
('Aden'),('Liverpool'),('Honolulu'),('Frankfurt'),('Glasgow'),
('Vienna'),('Jackson'),('Jakarta'),('Sydney'),('Oslo'),('Novgorod'),
('Norilsk'),('Izhevsk'),('Istanbul'),('Nice');

CREATE TABLE t3 (c varchar(32) not null) ENGINE=MyISAM;
INSERT INTO t3 VALUES
('Nicosia'),('Istanbul'),('Richmond'),('Stockholm'),('Dublin'),
('Wichita'),('Warsaw'),('Glasgow'),('Winnipeg'),('Irkutsk'),('Quito'),
('Xiamen'),('Berlin'),('Rome'),('Denver'),('Dallas'),('Kabul'),
('Prague'),('Izhevsk'),('Tirana'),('Sofia'),('Detroit'),('Sorbonne');

select count(*) from (
  SELECT * FROM t1 LEFT OUTER JOIN t2 LEFT OUTER JOIN t3 ON b < c ON a > b
  INTERSECT
  SELECT * FROM t1 LEFT OUTER JOIN t2 LEFT OUTER JOIN t3 ON b < c ON a > b
) a;

drop table t1,t2,t3;

--echo #
--echo # MDEV-13695: INTERSECT precedence is not in line with Oracle even
--echo # in SQL_MODE=Oracle
--echo #

create table t12(c1 int);
insert into t12 values(1);
insert into t12 values(2);
create table t13(c1 int);
insert into t13 values(1);
insert into t13 values(3);
create table t234(c1 int);
insert into t234 values(2);
insert into t234 values(3);
insert into t234 values(4);

--sorted_result
select * from t13 union select * from t234 intersect select * from t12;

drop table t12,t13,t234;

--echo # End of 10.3 tests

--echo #
--echo # MDEV-18701: Wrong result from query that uses INTERSECT after UNION ALL
--echo #

create table t1 (a int);
insert into t1 values (3), (1), (7), (3), (2), (7), (4);
create table t2 (a int);
insert into t2 values (4), (5), (9), (1), (8), (9);
create table t3 (a int);
insert into t3 values (8), (1), (8), (2), (3), (7), (2);

--sorted_result
select * from t1 where a > 4
union all 
select * from t2 where a < 5
intersect
select * from t3 where a < 5;

explain extended
select * from t1 where a > 4
union all 
select * from t2 where a < 5
intersect
select * from t3 where a < 5;

drop table t1,t2,t3;