#
# ORDER BY handling (e.g. filesort) tests that require innodb
#
-- source include/have_innodb.inc

--disable_warnings
drop table if exists t0,t1,t2,t3;
--enable_warnings

--echo #
--echo # MDEV-6434: Wrong result (extra rows) with ORDER BY, multiple-column index, InnoDB
--echo #

CREATE TABLE t1 (a INT, b INT, c INT, d TEXT, KEY idx(a,b,c)) ENGINE=InnoDB;

INSERT INTO t1 (a,c) VALUES
(8, 9),(8, 10),(13, 15),(16, 17),(16, 18),(16, 19),(20, 21),
(20, 22),(20, 24),(20, 25),(20, 26),(20, 27),(20, 28);

SELECT  * FROM t1 WHERE a = 8 AND (b = 1 OR b IS NULL) ORDER BY c;

DROP TABLE t1;

--echo #
--echo # MDEV-9457: Poor query plan chosen for ORDER BY query by a recent 10.1
--echo #
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

create table t1 (
  pk int primary key,
  key1 int,
  key2 int,
  col1 char(255),
  key(key1),
  key(key2)
) engine=innodb;

set @a=-1;
insert into t1 
select 
  @a:=@a+1, 
  @a, 
  @a, 
  repeat('abcd', 63) 
from t0 A, t0 B, t0 C, t0 D;

--echo # The following must NOT use 'index' on PK. 
--echo # It should use index_merge(key1,key2) + filesort
--replace_column 9 #
explain 
select * 
from t1
where key1<3 or key2<3
order by pk;

--replace_column 9 #
explain 
select * 
from t1
where key1<3 or key2<3;

drop table t0, t1;

--echo #
--echo # MDEV-14071: wrong results with orderby_uses_equalities=on
--echo # (duplicate of MDEV-13994)
--echo #

CREATE TABLE t1 (i int, j int, z int,PRIMARY KEY (i,j), KEY (z)) ENGINE=InnoDB;
CREATE TABLE t2 (i int, j int, PRIMARY KEY (i,j)) ENGINE=InnoDB;
CREATE TABLE t3 (j int, n varchar(5), PRIMARY KEY (j)) ENGINE=InnoDB;

INSERT INTO t1 VALUES
  (127,0,1),(188,0,1),(206,0,1),(218,0,1),(292,0,1),(338,0,1),(375,0,1),
  (381,0,1),(409,0,1),(466,0,1),(469,0,1),(498,0,1),(656,0,1);
INSERT INTO t1 VALUES
  (77,4,0),(86,7,0),(96,6,0),(96,7,0),(99,9,0),(99,10,0),(99,11,0),(104,4,0),
  (106,5,0),(148,6,0),(177,6,0),(181,5,0),(188,8,0),(218,8,0),(253,7,0),
  (268,4,0),(338,4,0),(409,7,0),(466,8,0),(469,8,0),(498,8,0),(656,8,0);

INSERT INTO t2 VALUES
  (127,7),(188,8),(188,9),(206,6),(218,8),(218,9),(292,7),(338,4),(338,5),
  (375,6),(381,5),(409,7),(409,8),(466,8),(466,9),(469,8),(469,9),(498,8),
  (498,9),(656,8),(656,9);
INSERT INTO t3 VALUES
  (4,'four'),(5,'five'),(6,'six'),(7,'seven'),(8,'eight'),(9,'nine');

let $q1=
SELECT i,n
FROM t1 INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
WHERE i IN (SELECT i FROM t1 WHERE z=1) AND z=0 ORDER BY i;
let $q2=
SELECT i,n
FROM t1 x INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
WHERE EXISTS (SELECT * FROM t1 WHERE i=x.i AND z=1) AND z=0 ORDER BY i;

SET @save_optimizer_switch=@@optimizer_switch;

SET optimizer_switch='orderby_uses_equalities=off';
eval $q1;
eval $q2;

SET optimizer_switch='orderby_uses_equalities=on';
eval $q1;
eval $q2;

set optimizer_switch= @save_optimizer_switch;

DROP TABLE t1,t2,t3;