# Test of SQL window functions NTH_VALUE
# ----------------------------------------------------------------------
SET NAMES utf8;
Warnings:
Warning	3719	'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
SELECT NTH_VALUE(6,1)    OVER ();
NTH_VALUE(6,1)    OVER ()
6
SELECT NTH_VALUE(NULL,1) OVER ();
NTH_VALUE(NULL,1) OVER ()
NULL
SELECT NTH_VALUE(6,2)    OVER ();
NTH_VALUE(6,2)    OVER ()
NULL
SELECT NTH_VALUE(6,1)    OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW);
NTH_VALUE(6,1)    OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
6
SELECT NTH_VALUE(NULL,1) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW);
NTH_VALUE(NULL,1) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
NULL
SELECT NTH_VALUE(6,2)    OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW);
NTH_VALUE(6,2)    OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
NULL
CREATE TABLE t1 (d DOUBLE, id INT, sex CHAR(1));
INSERT INTO t1 VALUES (1.0, 1, 'M'),
(2.0, 2, 'F'),
(3.0, 3, 'F'),
(4.0, 4, 'F'),
(5.0, 5, 'M'),
(NULL, NULL, 'M'),
(10.0, 10, NULL),
(10.0, 10, NULL),
(11.0, 11, NULL);
not supported
SELECT id, sex, NTH_VALUE(id, 1) FROM LAST OVER () FROM t1;
ERROR 42000: This version of MySQL doesn't yet support 'FROM LAST'
ok
SELECT id, sex, NTH_VALUE(id, 1) FROM FIRST OVER () FROM t1;
id	sex	NTH_VALUE(id, 1) FROM FIRST OVER ()
1	M	1
2	F	1
3	F	1
4	F	1
5	M	1
NULL	M	1
10	NULL	1
10	NULL	1
11	NULL	1
SELECT id, sex, NTH_VALUE(id, 1) IGNORE NULLS OVER () FROM t1;
ERROR 42000: This version of MySQL doesn't yet support 'IGNORE NULLS'
SELECT id, sex, NTH_VALUE(id, 1.2) OVER () FROM t1;
ERROR HY000: Incorrect arguments to nth_value
SELECT id, sex, NTH_VALUE(id, 'a') OVER () FROM t1;
ERROR HY000: Incorrect arguments to nth_value
SELECT id, sex, NTH_VALUE(id, -3) OVER () le1 FROM t1;
ERROR HY000: Incorrect arguments to nth_value
NULL argument is OK
SELECT id, sex, NTH_VALUE(id, NULL) OVER () FROM t1;
id	sex	NTH_VALUE(id, NULL) OVER ()
1	M	NULL
2	F	NULL
3	F	NULL
4	F	NULL
5	M	NULL
NULL	M	NULL
10	NULL	NULL
10	NULL	NULL
11	NULL	NULL
PREPARE p FROM "SELECT id, sex, NTH_VALUE(id, ?) OVER () FROM t1";
SET @p1= 3;
EXECUTE p USING @p1;
id	sex	NTH_VALUE(id, ?) OVER ()
1	M	3
2	F	3
3	F	3
4	F	3
5	M	3
NULL	M	3
10	NULL	3
10	NULL	3
11	NULL	3
SET @p1= NULL;
EXECUTE p USING @p1;
id	sex	NTH_VALUE(id, ?) OVER ()
1	M	NULL
2	F	NULL
3	F	NULL
4	F	NULL
5	M	NULL
NULL	M	NULL
10	NULL	NULL
10	NULL	NULL
11	NULL	NULL
SET @p1= '1';
EXECUTE p USING @p1;
ERROR HY000: Incorrect arguments to nth_value
SET @p1= 1.2;
EXECUTE p USING @p1;
ERROR HY000: Incorrect arguments to nth_value
DROP PREPARE p;
Ok, default semantics:
SELECT id, sex, NTH_VALUE(id, 1) RESPECT NULLS OVER () FROM t1;
id	sex	NTH_VALUE(id, 1) RESPECT NULLS OVER ()
1	M	1
2	F	1
3	F	1
4	F	1
5	M	1
NULL	M	1
10	NULL	1
10	NULL	1
11	NULL	1
SELECT id, sex, NTH_VALUE(NULL, 1) RESPECT NULLS OVER () FROM t1;
id	sex	NTH_VALUE(NULL, 1) RESPECT NULLS OVER ()
1	M	NULL
2	F	NULL
3	F	NULL
4	F	NULL
5	M	NULL
NULL	M	NULL
10	NULL	NULL
10	NULL	NULL
11	NULL	NULL
SELECT id, sex, NTH_VALUE(id+100, 1) RESPECT NULLS OVER () FROM t1;
id	sex	NTH_VALUE(id+100, 1) RESPECT NULLS OVER ()
1	M	101
2	F	101
3	F	101
4	F	101
5	M	101
NULL	M	101
10	NULL	101
10	NULL	101
11	NULL	101
SELECT id, sex, NTH_VALUE(100, 1) RESPECT NULLS OVER () FROM t1;
id	sex	NTH_VALUE(100, 1) RESPECT NULLS OVER ()
1	M	100
2	F	100
3	F	100
4	F	100
5	M	100
NULL	M	100
10	NULL	100
10	NULL	100
11	NULL	100
SELECT id, sex, NTH_VALUE(100, 100) RESPECT NULLS OVER () FROM t1;
id	sex	NTH_VALUE(100, 100) RESPECT NULLS OVER ()
1	M	NULL
2	F	NULL
3	F	NULL
4	F	NULL
5	M	NULL
NULL	M	NULL
10	NULL	NULL
10	NULL	NULL
11	NULL	NULL
static wf
SELECT id, sex, NTH_VALUE(id, 1) OVER () FROM t1;
id	sex	NTH_VALUE(id, 1) OVER ()
1	M	1
2	F	1
3	F	1
4	F	1
5	M	1
NULL	M	1
10	NULL	1
10	NULL	1
11	NULL	1
SELECT id, sex, NTH_VALUE(id, 3) OVER () FROM t1;
id	sex	NTH_VALUE(id, 3) OVER ()
1	M	3
2	F	3
3	F	3
4	F	3
5	M	3
NULL	M	3
10	NULL	3
10	NULL	3
11	NULL	3
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY sex ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING);
id	sex	NTH_VALUE(id, 2) OVER w
10	NULL	10
10	NULL	10
11	NULL	10
2	F	3
3	F	3
4	F	3
NULL	M	1
1	M	1
5	M	1
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY id ORDER BY sex ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING);
id	sex	NTH_VALUE(id, 2) OVER w
NULL	M	NULL
1	M	NULL
2	F	NULL
3	F	NULL
4	F	NULL
5	M	NULL
10	NULL	10
10	NULL	10
11	NULL	NULL
unbuffered
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID ROWS UNBOUNDED PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
10	NULL	NULL
10	NULL	10
11	NULL	10
2	F	NULL
3	F	3
4	F	3
NULL	M	NULL
1	M	1
5	M	1
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID RANGE UNBOUNDED PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
10	NULL	10
10	NULL	10
11	NULL	10
2	F	NULL
3	F	3
4	F	3
NULL	M	NULL
1	M	1
5	M	1
test unoptimized path: trick: add DOUBLE type w/SUM which is unoptimized by default
ascending
SELECT d, SUM(d) OVER w, sex, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY D ROWS 2 PRECEDING);
d	SUM(d) OVER w	sex	NTH_VALUE(d, 2) OVER w
10	10	NULL	NULL
10	20	NULL	10
11	31	NULL	10
2	2	F	NULL
3	5	F	3
4	9	F	3
NULL	NULL	M	NULL
1	1	M	1
5	6	M	1
SELECT d, SUM(d) OVER w, sex, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY D RANGE 2 PRECEDING);
d	SUM(d) OVER w	sex	NTH_VALUE(d, 2) OVER w
10	20	NULL	10
10	20	NULL	10
11	31	NULL	10
2	2	F	NULL
3	5	F	3
4	9	F	3
NULL	NULL	M	NULL
1	1	M	NULL
5	5	M	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D ROWS 2 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	NULL	1	NULL
1	1	2	1
2	3	3	1
3	6	3	2
4	9	3	3
5	12	3	4
10	19	3	5
10	25	3	10
11	31	3	10
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D ASC ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	NULL	0	NULL
1	NULL	1	NULL
2	1	2	1
3	3	2	2
4	5	2	3
5	7	2	4
10	9	2	5
10	15	2	10
11	20	2	10
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D ASC ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	3	2	2
1	5	2	3
2	7	2	4
3	9	2	5
4	15	2	10
5	20	2	10
10	21	2	11
10	11	1	NULL
11	NULL	0	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D RANGE 2 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	NULL	1	NULL
1	1	1	NULL
2	3	2	2
3	6	3	2
4	9	3	3
5	12	3	4
10	20	2	10
10	20	2	10
11	31	3	10
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	NULL	1	NULL
1	3	2	2
2	6	3	2
3	9	3	3
4	12	3	4
5	9	2	5
10	31	3	10
10	31	3	10
11	31	3	10
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
NULL	NULL	1	NULL
1	5	2	3
2	7	2	4
3	9	2	5
4	5	1	NULL
5	NULL	0	NULL
10	11	1	NULL
10	11	1	NULL
11	NULL	0	NULL
descending
SELECT d, SUM(d) OVER w, sex, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY D DESC ROWS 2 PRECEDING);
d	SUM(d) OVER w	sex	NTH_VALUE(d, 2) OVER w
11	11	NULL	NULL
10	21	NULL	10
10	31	NULL	10
4	4	F	NULL
3	7	F	3
2	9	F	3
5	5	M	NULL
1	6	M	1
NULL	6	M	1
SELECT d, SUM(d) OVER w, sex, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY D DESC RANGE 2 PRECEDING);
d	SUM(d) OVER w	sex	NTH_VALUE(d, 2) OVER w
11	11	NULL	NULL
10	31	NULL	10
10	31	NULL	10
4	4	F	NULL
3	7	F	3
2	9	F	3
5	5	M	NULL
1	1	M	NULL
NULL	NULL	M	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC ROWS 2 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	11	1	NULL
10	21	2	10
10	31	3	10
5	25	3	10
4	19	3	5
3	12	3	4
2	9	3	3
1	6	3	2
NULL	3	3	1
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	NULL	0	NULL
10	11	1	NULL
10	21	2	10
5	20	2	10
4	15	2	5
3	9	2	4
2	7	2	3
1	5	2	2
NULL	3	2	1
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	20	2	10
10	15	2	5
10	9	2	4
5	7	2	3
4	5	2	2
3	3	2	1
2	1	2	NULL
1	NULL	1	NULL
NULL	NULL	0	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC RANGE 2 PRECEDING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	11	1	NULL
10	31	3	10
10	31	3	10
5	5	1	NULL
4	9	2	4
3	12	3	4
2	9	3	3
1	6	3	2
NULL	NULL	1	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	31	3	10
10	31	3	10
10	31	3	10
5	9	2	4
4	12	3	4
3	9	3	3
2	6	3	2
1	3	2	1
NULL	NULL	1	NULL
SELECT d, SUM(d) OVER w, COUNT(*) OVER w, NTH_VALUE(d, 2) OVER w FROM t1 WINDOW w as (ORDER BY D DESC RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
d	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(d, 2) OVER w
11	20	2	10
10	NULL	0	NULL
10	NULL	0	NULL
5	7	2	3
4	5	2	2
3	3	2	1
2	1	1	NULL
1	NULL	0	NULL
NULL	NULL	1	NULL
Dynamic upper
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY id);
id	sex	NTH_VALUE(id, 2) OVER w
NULL	M	NULL
1	M	1
2	F	1
3	F	1
4	F	1
5	M	1
10	NULL	1
10	NULL	1
11	NULL	1
optimized path
ascending
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID ROWS 2 PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
10	NULL	NULL
10	NULL	10
11	NULL	10
2	F	NULL
3	F	3
4	F	3
NULL	M	NULL
1	M	1
5	M	1
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID RANGE 2 PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
10	NULL	10
10	NULL	10
11	NULL	10
2	F	NULL
3	F	3
4	F	3
NULL	M	NULL
1	M	NULL
5	M	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID ROWS 2 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	1	NULL
1	2	1
2	3	1
3	3	2
4	3	3
5	3	4
10	3	5
10	3	10
11	3	10
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID ASC ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	0	NULL
1	1	NULL
2	2	1
3	2	2
4	2	3
5	2	4
10	2	5
10	2	10
11	2	10
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID ASC ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	2	2
1	2	3
2	2	4
3	2	5
4	2	10
5	2	10
10	2	11
10	1	NULL
11	0	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID RANGE 2 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	1	NULL
1	1	NULL
2	2	2
3	3	2
4	3	3
5	3	4
10	2	10
10	2	10
11	3	10
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	1	NULL
1	2	2
2	3	2
3	3	3
4	3	4
5	2	5
10	3	10
10	3	10
11	3	10
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
NULL	1	NULL
1	2	3
2	2	4
3	2	5
4	1	NULL
5	0	NULL
10	1	NULL
10	1	NULL
11	0	NULL
descending
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID DESC ROWS 2 PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
11	NULL	NULL
10	NULL	10
10	NULL	10
4	F	NULL
3	F	3
2	F	3
5	M	NULL
1	M	1
NULL	M	1
SELECT id, sex, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (PARTITION BY SEX ORDER BY ID DESC RANGE 2 PRECEDING);
id	sex	NTH_VALUE(id, 2) OVER w
11	NULL	NULL
10	NULL	10
10	NULL	10
4	F	NULL
3	F	3
2	F	3
5	M	NULL
1	M	NULL
NULL	M	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC ROWS 2 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	1	NULL
10	2	10
10	3	10
5	3	10
4	3	5
3	3	4
2	3	3
1	3	2
NULL	3	1
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	0	NULL
10	1	NULL
10	2	10
5	2	10
4	2	5
3	2	4
2	2	3
1	2	2
NULL	2	1
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	2	10
10	2	5
10	2	4
5	2	3
4	2	2
3	2	1
2	2	NULL
1	1	NULL
NULL	0	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC RANGE 2 PRECEDING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	1	NULL
10	3	10
10	3	10
5	1	NULL
4	2	4
3	3	4
2	3	3
1	3	2
NULL	1	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	3	10
10	3	10
10	3	10
5	2	4
4	3	4
3	3	3
2	3	2
1	2	1
NULL	1	NULL
SELECT id, COUNT(*) OVER w, NTH_VALUE(id, 2) OVER w FROM t1 WINDOW w as (ORDER BY ID DESC RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING);
id	COUNT(*) OVER w	NTH_VALUE(id, 2) OVER w
11	2	10
10	0	NULL
10	0	NULL
5	2	3
4	2	2
3	2	1
2	1	NULL
1	0	NULL
NULL	1	NULL
many nth_value calls on one window, optimized path
SELECT id, COUNT(*) OVER w,
NTH_VALUE(id, 3) OVER w,
FIRST_VALUE(id) OVER w,
NTH_VALUE(id, 1) OVER w,
NTH_VALUE(id, 2) OVER w FROM t1
WINDOW w AS (ORDER BY id ASC ROWS BETWEEN 2 PRECEDING AND CURRENT ROW);
id	COUNT(*) OVER w	NTH_VALUE(id, 3) OVER w	FIRST_VALUE(id) OVER w	NTH_VALUE(id, 1) OVER w	NTH_VALUE(id, 2) OVER w
NULL	1	NULL	NULL	NULL	NULL
1	2	NULL	NULL	NULL	1
2	3	2	NULL	NULL	1
3	3	3	1	1	2
4	3	4	2	2	3
5	3	5	3	3	4
10	3	10	4	4	5
10	3	10	5	5	10
11	3	11	10	10	10
many nth_value calls on one window, unoptimized path
SELECT id, SUM(d) OVER w, COUNT(*) OVER w,
NTH_VALUE(id, 3) OVER w,
FIRST_VALUE(id) OVER w,
NTH_VALUE(id, 1) OVER w,
NTH_VALUE(id, 2) OVER w FROM t1
WINDOW w AS (ORDER BY id ASC ROWS BETWEEN 2 PRECEDING AND CURRENT ROW);
id	SUM(d) OVER w	COUNT(*) OVER w	NTH_VALUE(id, 3) OVER w	FIRST_VALUE(id) OVER w	NTH_VALUE(id, 1) OVER w	NTH_VALUE(id, 2) OVER w
NULL	NULL	1	NULL	NULL	NULL	NULL
1	1	2	NULL	NULL	NULL	1
2	3	3	2	NULL	NULL	1
3	6	3	3	1	1	2
4	9	3	4	2	2	3
5	12	3	5	3	3	4
10	19	3	10	4	4	5
10	25	3	10	5	5	10
11	31	3	11	10	10	10
DROP TABLE t1;

Bug#25835149

SET @savmode=@@SESSION.SQL_MODE;
SET SESSION SQL_MODE='';
CREATE TABLE `test`(
`pk` INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
`dt` DATETIME DEFAULT NULL,
`ge` GEOMETRY DEFAULT NULL
);
Warnings:
Warning	1681	Integer display width is deprecated and will be removed in a future release.
INSERT INTO `test` VALUES
(1, '2007-05-08 12:10:55', ST_GeomFromText('POINT(1 1)')),
(2, NULL, NULL), (3, NULL, NULL),
(4, '2001-01-18 00:00:00', ST_GeomFromText('POINT(4 4)')),
(5, '2009-11-24 00:00:00', ST_GeomFromText('POINT(5 5)')),
(6, '2001-11-22 21:41:15', ST_GeomFromText('POINT(6 6)')),
(7, NULL, NULL),
(8, '0000-00-00 00:00:00', ST_GeomFromText('POINT(8 8)')),
(9, '2003-05-13 18:03:04', ST_GeomFromText('POINT(9 9)')),
(10, '2008-04-15 09:44:20', ST_GeomFromText('POINT(10 10)')),
(11, '2009-07-15 00:00:00', ST_GeomFromText('POINT(11 11)')),
(12, '2007-04-27 13:53:37', ST_GeomFromText('POINT(12 12)')),
(13, '0000-00-00 00:00:00', ST_GeomFromText('POINT(13 13)')),
(14, '2000-02-02 02:15:28', ST_GeomFromText('POINT(14 14)')),
(15, '2004-06-06 00:00:00', ST_GeomFromText('POINT(15 15)')),
(16, NULL, NULL),
(17, '2002-06-21 00:00:00', ST_GeomFromText('POINT(17 17)')),
(18, '2007-03-23 00:00:00', ST_GeomFromText('POINT(18 18)')),
(19, '2006-10-06 00:00:00', ST_GeomFromText('POINT(19 19)')),
(20, '2008-07-07 00:00:00', ST_GeomFromText('POINT(20 20)'));
SELECT dt, NTH_VALUE(dt, 3) OVER w1 nth,
CAST(NTH_VALUE(ge, 3) OVER w1 AS JSON) ge
FROM test WHERE `pk` = 2 WINDOW w1 AS ();
dt	nth	ge
NULL	NULL	NULL
SELECT dt, NTH_VALUE(dt, 3) OVER w1 nth,
CAST(NTH_VALUE(ge, 3) OVER w1 AS JSON) ge
FROM test WHERE `pk` > 3 WINDOW w1 AS ();
dt	nth	ge
2001-01-18 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2009-11-24 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2001-11-22 21:41:15	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
NULL	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
0000-00-00 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2003-05-13 18:03:04	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2008-04-15 09:44:20	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2009-07-15 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2007-04-27 13:53:37	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
0000-00-00 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2000-02-02 02:15:28	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2004-06-06 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
NULL	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2002-06-21 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2007-03-23 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2006-10-06 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
2008-07-07 00:00:00	2001-11-22 21:41:15	{"type": "Point", "coordinates": [6.0, 6.0]}
SELECT dt, NTH_VALUE(CAST(dt AS TIME), 3) OVER w1
FROM test WHERE `pk` > 3 WINDOW w1 AS ();
dt	NTH_VALUE(CAST(dt AS TIME), 3) OVER w1
2001-01-18 00:00:00	21:41:15
2009-11-24 00:00:00	21:41:15
2001-11-22 21:41:15	21:41:15
NULL	21:41:15
0000-00-00 00:00:00	21:41:15
2003-05-13 18:03:04	21:41:15
2008-04-15 09:44:20	21:41:15
2009-07-15 00:00:00	21:41:15
2007-04-27 13:53:37	21:41:15
0000-00-00 00:00:00	21:41:15
2000-02-02 02:15:28	21:41:15
2004-06-06 00:00:00	21:41:15
NULL	21:41:15
2002-06-21 00:00:00	21:41:15
2007-03-23 00:00:00	21:41:15
2006-10-06 00:00:00	21:41:15
2008-07-07 00:00:00	21:41:15
SET SESSION SQL_MODE=@savmode;
DROP TABLE `test`;

Bug with missing update of cached example after split_sum_func
for NTH_VALUE

CREATE TABLE t(a INT, b INT, c INT, d INT);
INSERT INTO t VALUES (1,1,1,1), (2,2,4,2), (3,3,9,3);
SELECT SUM(c/d), NTH_VALUE(SUM(c/d),1) OVER (ORDER BY a)  FROM t GROUP BY a,b;
SUM(c/d)	NTH_VALUE(SUM(c/d),1) OVER (ORDER BY a)
1.0000	1.0000
2.0000	1.0000
3.0000	1.0000
SELECT NTH_VALUE(SUM(c/d), 3) OVER (ORDER BY a)  FROM t GROUP BY a,b;
NTH_VALUE(SUM(c/d), 3) OVER (ORDER BY a)
NULL
NULL
3.0000
SELECT 1+NTH_VALUE(SUM(c/d), 1) OVER (ORDER BY a)  FROM t GROUP BY a,b;
1+NTH_VALUE(SUM(c/d), 1) OVER (ORDER BY a)
2.0000
2.0000
2.0000
SELECT ROW_NUMBER() OVER () rn,
1+NTH_VALUE(SUM(c/d), 1) OVER (ORDER BY a) plus_fv,
1+NTH_VALUE(SUM(c/d), 2) OVER (ORDER BY a) plus_lv FROM t GROUP BY a,b;
rn	plus_fv	plus_lv
1	2.0000	NULL
2	2.0000	3.0000
3	2.0000	3.0000
DROP TABLE t;
#
# Bug#26740557: WINDOW FUNC + JSON: ASSERTION FAILED:
#               FALSE IN ITEM::VAL_JSON
#
SELECT ((MAKETIME(((QUARTER('| !*c>*{/'))<=>
(NTH_VALUE(JSON_OBJECTAGG('key4',0x067c13d0d0d7d8c8d768aef7)
,1)OVER())),'9236-05-27',0xe2a7d4))^(0x1109));
((MAKETIME(((QUARTER('| !*c>*{/'))<=>
(NTH_VALUE(JSON_OBJECTAGG('key4',0x067c13d0d0d7d8c8d768aef7)
,1)OVER())),'9236-05-27',0xe2a7d4))^(0x1109))
NULL
Warnings:
Warning	1292	Incorrect datetime value: '| !*c>*{/'
Warning	1292	Incorrect datetime value: '| !*c>*{/'
Warning	1292	Truncated incorrect INTEGER value: '9236-05-27'
SELECT ((NTH_VALUE(JSON_MERGE_PATCH(1.755913e+308,'{ }'),246)OVER())<=(1));
((NTH_VALUE(JSON_MERGE_PATCH(1.755913e+308,'{ }'),246)OVER())<=(1))
NULL
SELECT ((NTH_VALUE(JSON_MERGE_PATCH(1.755913e+308,'{ }'),1)OVER())<=(1));
ERROR 22032: Invalid data type for JSON data in argument 1 to function json_merge_patch; a JSON string or JSON type is required.
SELECT ((QUOTE(JSON_KEYS(NTH_VALUE(JSON_KEYS(EXP(-15676),ABS('d0')),
162)OVER())))>=(CONNECTION_ID()));
((QUOTE(JSON_KEYS(NTH_VALUE(JSON_KEYS(EXP(-15676),ABS('d0')),
162)OVER())))>=(CONNECTION_ID()))
0
SELECT ((QUOTE(JSON_KEYS(NTH_VALUE(JSON_KEYS(EXP(-15676),ABS('d0')),
1)OVER())))>=(CONNECTION_ID()));
ERROR 22032: Invalid data type for JSON data in argument 1 to function json_keys; a JSON string or JSON type is required.
SELECT JSON_LENGTH(NTH_VALUE(JSON_OBJECTAGG('key2','*B'),172)OVER());
JSON_LENGTH(NTH_VALUE(JSON_OBJECTAGG('key2','*B'),172)OVER())
NULL
SELECT JSON_LENGTH(NTH_VALUE(JSON_OBJECTAGG('key2','*B'),1)OVER());
JSON_LENGTH(NTH_VALUE(JSON_OBJECTAGG('key2','*B'),1)OVER())
1
# End of test for Bug#26740557