LET $no_pushdown=
  SET STATEMENT optimizer_switch='condition_pushdown_for_subquery=off' FOR;

CREATE TABLE t1 (a INT, b INT, c INT, d INT);
CREATE TABLE t2 (e INT, f INT, g INT);
CREATE TABLE t3 (x INT, y INT);

INSERT INTO t1 VALUES
(1,1,18,1), (2,1,25,1), (1,3,40,1), (2,3,40,4),
(4,2,24,4), (3,2,23,1), (1,2,40,2), (3,4,17,2),
(5,5,65,1), (2,3,70,3), (1,4,35,3), (2,3,25,3),
(2,2,40,4), (1,4,55,1), (5,3,72,4), (1,2,70,5);

INSERT INTO t2 VALUES
(1,2,38), (2,3,15), (1,3,40), (1,4,35),
(2,2,70), (3,4,23), (5,5,12), (5,4,17),
(3,3,17), (4,2,24), (2,5,25), (5,1,65);

INSERT INTO t3 VALUES
(1,25), (1,18), (2,15), (4,24),
(1,35), (3,23), (3,17), (2,15);

CREATE VIEW v1 AS
(
  SELECT t3.x AS v1_x, t3.y AS v1_y FROM t3 WHERE t3.x<=3
);

CREATE VIEW v2 AS
(
  SELECT t2.e, t2.f, MAX(t2.g) AS max_g
  FROM t2
  GROUP BY t2.e
  HAVING max_g>25
);

--echo # conjunctive subformula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE t1.c<25 AND
  (t1.a,t1.c) IN (SELECT t2.e,MAX(t2.g) FROM t2 WHERE t2.e<5 GROUP BY t2.e);

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted AND formula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE t1.c>55 AND t1.b<4 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted OR formula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.c>60 OR t1.c<25) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted AND-OR formula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE ((t1.c>60 OR t1.c<25) AND t1.b>2) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE ((t1.a<2 OR t1.d>3) AND t1.b>1) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using view IN subquery defINition : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE t1.c>20 AND
  (t1.a,t1.c) IN
  (
    SELECT v1_x,MAX(v1_y)
    FROM v1
    WHERE v1_x>1
    GROUP BY v1_x
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using equality : pushing into WHERE
LET $query=
SELECT * FROM t1,v1
WHERE t1.c>20 AND t1.c=v1_y AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE t1.a<2 AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted AND formula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE t1.a>2 AND t1.a<5 AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted OR formula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.a<2 OR t1.a>=4) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted AND-OR formula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE ((t1.a<2 OR t1.a=5) AND t1.b>3) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # extracted AND-OR formula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE ((t1.a<2 OR t1.a=5) AND t1.b>3) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE ((t1.b<3 OR t1.d>2) AND t1.a<2) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using equalities : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE t1.d=1 AND t1.a=t1.d AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using equality : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE t1.d>1 AND t1.a=t1.d AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using view IN subquery definition : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE t1.a<3 AND
  (t1.a,t1.c) IN
  (
    SELECT v1_x,MAX(v1_y)
    FROM v1
    WHERE v1_x>1
    GROUP BY v1_x
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # using equality : pushing into WHERE
LET $query=
SELECT * FROM t1,v1
WHERE t1.a=v1_x AND v1_x<2 AND v1_y>30 AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE
--echo # extracted OR formula : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE ((t1.b<3 OR t1.b=4) AND t1.a<3) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using addition : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.a+t1.c>41) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using substitution : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.c-t1.a<35) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using multiplication : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.c*t1.a>100) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using division : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.c/t1.a>30) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using BETWEEN : pushing into HAVING
LET $query=
SELECT * FROM t1
WHERE (t1.c BETWEEN 50 AND 100) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using addition : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.a+t1.b > 5) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using substitution : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.a-t1.b > 0) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using multiplication : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.a*t1.b > 6) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using division : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.b/t1.a > 2) AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e,t2.f
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula using BETWEEN : pushing into WHERE
LET $query=
SELECT * FROM t1
WHERE (t1.a BETWEEN 1 AND 3) AND
  (t1.a,t1.c) IN
  (
    SELECT t2.e,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into HAVING of the IN subquery
--echo # conjunctive subformula : pushing into WHERE of the view from the IN subquery
LET $query=
SELECT * FROM t1
WHERE t1.c>3 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT v2.e,MAX(v2.f),v2.max_g
    FROM v2
    WHERE v2.e<5
    GROUP BY v2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE of the IN subquery
--echo # conjunctive subformula : pushing into WHERE of the view
--echo #                          from the IN subquery
LET $query=
SELECT * FROM t1
WHERE t1.a>1 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT v2.e,MAX(v2.f),v2.max_g
    FROM v2
    WHERE v2.e<5
    GROUP BY v2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE and HAVING
--echo #                          of the IN subquery
--echo # conjunctive subformula : pushing into WHERE of the view
--echo #                          from the IN subquery
LET $query=
SELECT * FROM t1
WHERE t1.a>1 AND t1.c<100 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT v2.e,MAX(v2.f),v2.max_g
    FROM v2
    WHERE v2.e<5
    GROUP BY v2.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE of the IN subquery
--echo # extracted AND formula  : pushing into HAVING of the derived table
--echo #                          from the IN subquery
LET $query=
SELECT * FROM t1
WHERE t1.a>1 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT d_tab.e,MAX(d_tab.f),d_tab.max_g 
    FROM
    (
      SELECT t2.e, t2.f, MAX(t2.g) AS max_g
      FROM t2
      GROUP BY t2.f
      HAVING max_g>25
    ) as d_tab
    WHERE d_tab.e<5
    GROUP BY d_tab.e
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into HAVING of the derived table
--echo # conjunctive subformula : pushing into WHERE of the IN subquery from
--echo #                          the derived table
SELECT *
FROM t3,
(
  SELECT t1.a,t1.b,max(t1.c) as max_c
  FROM t1
  WHERE t1.a>1 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.e<5
    GROUP BY t2.e
  )
  GROUP BY t1.a
) AS d_tab
WHERE d_tab.a=t3.x AND d_tab.b>2;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE of the derived table
--echo # extracted AND formula  : pushing into WHERE of the IN subquery from
--echo #                          the derived table
SELECT *
FROM t3,
(
  SELECT t1.a,t1.b,max(t1.c) as max_c
  FROM t1
  WHERE t1.a>1 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    GROUP BY t2.e
    HAVING t2.f<5
  )
  GROUP BY t1.a
) AS d_tab
WHERE d_tab.a=t3.x AND d_tab.a<5;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE and HAVING
--echo #                          of the derived table
--echo # extracted AND formula  : pushing into WHERE of the IN subquery
--echo #                          from the derived table
LET $query=
SELECT *
FROM t3,
(
  SELECT t1.a,t1.b,max(t1.c) as max_c
  FROM t1
  WHERE t1.a>1 AND
  (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    GROUP BY t2.e
    HAVING t2.f<5
  )
  GROUP BY t1.a
) AS d_tab
WHERE d_tab.a=t3.x AND d_tab.a<5 AND d_tab.max_c<70;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE of the derived table
--echo # conjunctive subformula : pushing into HAVING of the IN subquery from
--echo #                          the derived table
SELECT *
FROM t3,
(
  SELECT t1.a,t1.b,max(t1.c) as max_c
  FROM t1
  WHERE (t1.a,t1.b,t1.c) IN
  (
    SELECT t2.e,t2.f,MAX(t2.g)
    FROM t2
    WHERE t2.f<4
    GROUP BY t2.f
  )
  GROUP BY t1.a
  HAVING t1.b<5
) AS d_tab
WHERE d_tab.a=t3.x AND d_tab.a<5;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE
--echo # using WINDOW FUNCTIONS : using MAX function
LET $query=
SELECT * FROM t1
WHERE (t1.b>1) AND
  (t1.b, t1.c) IN
  (
    SELECT t2.f, MAX(t2.g) OVER (PARTITION BY t2.f)
    FROM t2
    WHERE t2.e<5
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

--echo # conjunctive subformula : pushing into WHERE
--echo # using WINDOW FUNCTIONS : using SUM function
LET $query=
SELECT * FROM t1
WHERE (t1.b>1) AND
  (t1.b, t1.c) IN
  (
    SELECT t2.f, CAST(SUM(t2.g) OVER (PARTITION BY t2.f) AS INT)
    FROM t2
    WHERE t2.e<5
  )
;

EVAL $no_pushdown $query;
EVAL $query;
EVAL EXPLAIN $query;
EVAL EXPLAIN FORMAT=JSON $query;

DROP TABLE t1,t2,t3;
DROP VIEW v1,v2;

--echo #
--echo # MDEV-16721: IN-subquery defined with the AUTO-INCREMENT column
--echo #             and used with the ZEROFILL column
--echo #

CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY);
CREATE TABLE t2 (b INT ZEROFILL);

INSERT INTO t2 VALUES (2), (3);

SELECT *
FROM t2
WHERE t2.b IN (SELECT MIN(t1.a) from t1);

DROP TABLE t1, t2;

--echo #
--echo # MDEV-16730: server fault caused by pushdown into the derived table
--echo #             condition that joins IN subquery and parent select
--echo #

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);

SELECT *
FROM (SELECT DISTINCT * FROM t1) AS tbl
WHERE tbl.a IN
(
  SELECT COUNT(t1.a)
  FROM t1
  WHERE (t1.a!=1)
);

DROP TABLE t1;

--echo #
--echo # MDEV-16727: failure assertion caused by the lamely saved list
--echo #             of multiple equalities
--echo #

CREATE TABLE t1 (a varchar(1));
INSERT INTO t1 VALUES ('x'), ('y'), ('z');

CREATE TABLE t2 (b varchar(1));
INSERT INTO t2 VALUES ('x');

CREATE TABLE t3 (c varchar(1));
INSERT INTO t3 VALUES ('y');

CREATE TABLE t4 (d varchar(1));
INSERT INTO t4 VALUES ('x'), ('z');

SELECT * FROM t1
JOIN t2 ON (t1.a=t2.b)
LEFT JOIN t3 ON (t1.a=t3.c)
WHERE (t1.a) IN
(
  SELECT t4.d
  FROM t4
  ORDER BY t4.d
);

DROP TABLE t1,t2,t3,t4;

--echo #
--echo # MDEV-17360: IN subquery predicate with outer reference in the left part
--echo #             that refers to a field of a mergeable derived table
--echo #

CREATE TABLE t1 (id1 int) ENGINE=MYISAM;
INSERT INTO t1 VALUES (1814),(0),(NULL),(1);

CREATE TABLE t2 (id2 int) ENGINE=MYISAM;

SELECT 1 AS r FROM t2,t1,(SELECT * FROM t1) dt1
  WHERE NOT EXISTS (SELECT id2 FROM t2
                      WHERE dt1.id1 IN (SELECT t2.id2 FROM t2
                                          HAVING t2.id2 >= 1));

DROP TABLE t1,t2;

--echo #
--echo # MDEV-17027: IN subquery predicate with outer reference in the left part
--echo #             conjuncted with equality predicate
--echo #

CREATE TABLE t1 (pk int, i1 int, v1 varchar(1));
INSERT INTO t1 VALUES (3,2,'x'), (1,1,'y'), (4,2,'z');

CREATE TABLE t2 (pk int, i1 int, v1 varchar(1));
INSERT INTO t2 VALUES (5,2,'x'), (7,1,'x');

CREATE TABLE t3 (pk int, i1 int, v1 varchar(1));
INSERT INTO t3 VALUES (8,2,'x'), (7,1,'z');

SELECT t3.i1 FROM t3
  WHERE EXISTS ( SELECT t2.v1 FROM t1,t2
                   WHERE t1.v1 = t2.v1 AND
                         t3.i1 IN (SELECT t.i1 FROM t1 as t
                                    GROUP BY i1 HAVING t.i1 < 3));

DROP TABLE t1,t2,t3;