// Copyright 2019 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package executor_test

import (
	"fmt"

	. "github.com/pingcap/check"
	"github.com/pingcap/tidb/util/testkit"
)

func (s *testSuite7) TestWindowFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("set @@tidb_window_concurrency = 1")
	tk.MustExec("set @@tidb_enable_pipelined_window_function = 0")
	defer func() {
		tk.MustExec("set @@tidb_enable_pipelined_window_function=1;")
	}()
	doTestWindowFunctions(tk)
}

func (s *testSuite7) TestWindowParallelFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("set @@tidb_window_concurrency = 4")
	tk.MustExec("set @@tidb_enable_pipelined_window_function = 0")
	defer func() {
		tk.MustExec("set @@tidb_enable_pipelined_window_function=1;")
	}()
	doTestWindowFunctions(tk)
}

func (s *testSuite7) TestPipelinedWindowFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("set @@tidb_window_concurrency = 1")
	doTestWindowFunctions(tk)
}

func (s *testSuite7) TestPipelinedWindowParallelFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("set @@tidb_window_concurrency = 4")
	doTestWindowFunctions(tk)
}

func doTestWindowFunctions(tk *testkit.TestKit) {
	var result *testkit.Result
	tk.MustExec("use test")
	tk.MustExec("drop table if exists t")
	tk.MustExec("create table t (a int, b int, c int)")
	tk.MustExec("set @@tidb_enable_window_function = 1")
	defer func() {
		tk.MustExec("set @@tidb_enable_window_function = 0")
	}()
	tk.MustExec("insert into t values (1,2,3),(4,3,2),(2,3,4)")
	result = tk.MustQuery("select count(a) over () from t")
	result.Check(testkit.Rows("3", "3", "3"))
	result = tk.MustQuery("select sum(a) over () + count(a) over () from t")
	result.Check(testkit.Rows("10", "10", "10"))
	result = tk.MustQuery("select sum(a) over (partition by a) from t").Sort()
	result.Check(testkit.Rows("1", "2", "4"))
	result = tk.MustQuery("select 1 + sum(a) over (), count(a) over () from t")
	result.Check(testkit.Rows("8 3", "8 3", "8 3"))
	result = tk.MustQuery("select sum(t1.a) over() from t t1, t t2")
	result.Check(testkit.Rows("21", "21", "21", "21", "21", "21", "21", "21", "21"))
	result = tk.MustQuery("select _tidb_rowid, sum(t.a) over() from t")
	result.Check(testkit.Rows("1 7", "2 7", "3 7"))

	result = tk.MustQuery("select a, row_number() over() from t")
	result.Check(testkit.Rows("1 1", "4 2", "2 3"))
	result = tk.MustQuery("select a, row_number() over(partition by a) from t").Sort()
	result.Check(testkit.Rows("1 1", "2 1", "4 1"))

	result = tk.MustQuery("select a, sum(a) over(rows between unbounded preceding and 1 following) from t")
	result.Check(testkit.Rows("1 5", "4 7", "2 7"))
	result = tk.MustQuery("select a, sum(a) over(rows between 1 preceding and 1 following) from t")
	result.Check(testkit.Rows("1 5", "4 7", "2 6"))
	result = tk.MustQuery("select a, sum(a) over(rows between unbounded preceding and 1 preceding) from t")
	result.Check(testkit.Rows("1 <nil>", "4 1", "2 5"))

	tk.MustExec("drop table t")
	tk.MustExec("create table t(a int, b date)")
	tk.MustExec("insert into t values (null,null),(1,20190201),(2,20190202),(3,20190203),(5,20190205)")
	result = tk.MustQuery("select a, sum(a) over(order by a range between 1 preceding and 2 following) from t")
	result.Check(testkit.Rows("<nil> <nil>", "1 6", "2 6", "3 10", "5 5"))
	result = tk.MustQuery("select a, sum(a) over(order by a desc range between 1 preceding and 2 following) from t")
	result.Check(testkit.Rows("5 8", "3 6", "2 6", "1 3", "<nil> <nil>"))
	result = tk.MustQuery("select a, b, sum(a) over(order by b range between interval 1 day preceding and interval 2 day following) from t")
	result.Check(testkit.Rows("<nil> <nil> <nil>", "1 2019-02-01 6", "2 2019-02-02 6", "3 2019-02-03 10", "5 2019-02-05 5"))
	result = tk.MustQuery("select a, b, sum(a) over(order by b desc range between interval 1 day preceding and interval 2 day following) from t")
	result.Check(testkit.Rows("5 2019-02-05 8", "3 2019-02-03 6", "2 2019-02-02 6", "1 2019-02-01 3", "<nil> <nil> <nil>"))

	tk.MustExec("drop table t")
	tk.MustExec("CREATE TABLE t (id INTEGER, sex CHAR(1))")
	tk.MustExec("insert into t values (1, 'M'), (2, 'F'), (3, 'F'), (4, 'F'), (5, 'M'), (10, NULL), (11, NULL)")
	result = tk.MustQuery("SELECT sex, id, RANK() OVER (PARTITION BY sex ORDER BY id DESC) FROM t").Sort()
	result.Check(testkit.Rows("<nil> 10 2", "<nil> 11 1", "F 2 3", "F 3 2", "F 4 1", "M 1 2", "M 5 1"))

	tk.MustExec("drop table t")
	tk.MustExec("create table t(a int, b int)")
	tk.MustExec("insert into t values (1,1),(1,2),(2,1),(2,2)")
	result = tk.MustQuery("select a, b, rank() over() from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 1 1", "2 2 1"))
	result = tk.MustQuery("select a, b, rank() over(order by a) from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 1 3", "2 2 3"))
	result = tk.MustQuery("select a, b, rank() over(order by a, b) from t")
	result.Check(testkit.Rows("1 1 1", "1 2 2", "2 1 3", "2 2 4"))

	result = tk.MustQuery("select a, b, dense_rank() over() from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 1 1", "2 2 1"))
	result = tk.MustQuery("select a, b, dense_rank() over(order by a) from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 1 2", "2 2 2"))
	result = tk.MustQuery("select a, b, dense_rank() over(order by a, b) from t")
	result.Check(testkit.Rows("1 1 1", "1 2 2", "2 1 3", "2 2 4"))

	result = tk.MustQuery("select row_number() over(rows between 1 preceding and 1 following) from t")
	result.Check(testkit.Rows("1", "2", "3", "4"))
	result = tk.MustQuery("show warnings")
	result.Check(testkit.Rows("Note 3599 Window function 'row_number' ignores the frame clause of window '<unnamed window>' and aggregates over the whole partition"))

	result = tk.MustQuery("select a, sum(a) over() from t")
	result.Check(testkit.Rows("1 6", "1 6", "2 6", "2 6"))
	result = tk.MustQuery("select a, sum(a) over(order by a) from t")
	result.Check(testkit.Rows("1 2", "1 2", "2 6", "2 6"))
	result = tk.MustQuery("select a, sum(a) over(order by a, b) from t")
	result.Check(testkit.Rows("1 1", "1 2", "2 4", "2 6"))

	result = tk.MustQuery("select a, first_value(a) over(), last_value(a) over() from t")
	result.Check(testkit.Rows("1 1 2", "1 1 2", "2 1 2", "2 1 2"))
	result = tk.MustQuery("select a, first_value(a) over(rows between 1 preceding and 1 following), last_value(a) over(rows between 1 preceding and 1 following) from t")
	result.Check(testkit.Rows("1 1 1", "1 1 2", "2 1 2", "2 2 2"))
	result = tk.MustQuery("select a, first_value(a) over(rows between 1 following and 1 following), last_value(a) over(rows between 1 following and 1 following) from t")
	result.Check(testkit.Rows("1 1 1", "1 2 2", "2 2 2", "2 <nil> <nil>"))
	result = tk.MustQuery("select a, first_value(rand(0)) over(), last_value(rand(0)) over() from t")
	result.Check(testkit.Rows("1 0.15522042769493574 0.33109208227236947", "1 0.15522042769493574 0.33109208227236947",
		"2 0.15522042769493574 0.33109208227236947", "2 0.15522042769493574 0.33109208227236947"))

	result = tk.MustQuery("select a, b, cume_dist() over() from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 1 1", "2 2 1"))
	result = tk.MustQuery("select a, b, cume_dist() over(order by a) from t")
	result.Check(testkit.Rows("1 1 0.5", "1 2 0.5", "2 1 1", "2 2 1"))
	result = tk.MustQuery("select a, b, cume_dist() over(order by a, b) from t")
	result.Check(testkit.Rows("1 1 0.25", "1 2 0.5", "2 1 0.75", "2 2 1"))

	result = tk.MustQuery("select a, nth_value(a, null) over() from t")
	result.Check(testkit.Rows("1 <nil>", "1 <nil>", "2 <nil>", "2 <nil>"))
	result = tk.MustQuery("select a, nth_value(a, 1) over() from t")
	result.Check(testkit.Rows("1 1", "1 1", "2 1", "2 1"))
	result = tk.MustQuery("select a, nth_value(a, 4) over() from t")
	result.Check(testkit.Rows("1 2", "1 2", "2 2", "2 2"))
	result = tk.MustQuery("select a, nth_value(a, 5) over() from t")
	result.Check(testkit.Rows("1 <nil>", "1 <nil>", "2 <nil>", "2 <nil>"))

	result = tk.MustQuery("select ntile(3) over() from t")
	result.Check(testkit.Rows("1", "1", "2", "3"))
	result = tk.MustQuery("select ntile(2) over() from t")
	result.Check(testkit.Rows("1", "1", "2", "2"))
	result = tk.MustQuery("select ntile(null) over() from t")
	result.Check(testkit.Rows("<nil>", "<nil>", "<nil>", "<nil>"))

	result = tk.MustQuery("select a, percent_rank() over() from t")
	result.Check(testkit.Rows("1 0", "1 0", "2 0", "2 0"))
	result = tk.MustQuery("select a, percent_rank() over(order by a) from t")
	result.Check(testkit.Rows("1 0", "1 0", "2 0.6666666666666666", "2 0.6666666666666666"))
	result = tk.MustQuery("select a, b, percent_rank() over(order by a, b) from t")
	result.Check(testkit.Rows("1 1 0", "1 2 0.3333333333333333", "2 1 0.6666666666666666", "2 2 1"))

	result = tk.MustQuery("select a, lead(a) over (), lag(a) over() from t")
	result.Check(testkit.Rows("1 1 <nil>", "1 2 1", "2 2 1", "2 <nil> 2"))
	result = tk.MustQuery("select a, lead(a, 0) over(), lag(a, 0) over() from t")
	result.Check(testkit.Rows("1 1 1", "1 1 1", "2 2 2", "2 2 2"))
	result = tk.MustQuery("select a, lead(a, 1, a) over(), lag(a, 1, a) over() from t")
	result.Check(testkit.Rows("1 1 1", "1 2 1", "2 2 1", "2 2 2"))
	result = tk.MustQuery("select a, lead(a, 1, 'lead') over(), lag(a, 1, 'lag') over() from t")
	result.Check(testkit.Rows("1 1 lag", "1 2 1", "2 2 1", "2 lead 2"))

	result = tk.MustQuery("SELECT CUME_DIST() OVER (ORDER BY null);")
	result.Check(testkit.Rows("1"))

	tk.MustQuery("select lead(a) over(partition by null) from t").Sort().Check(testkit.Rows("1", "2", "2", "<nil>"))

	tk.MustExec("create table issue10494(a INT, b CHAR(1), c DATETIME, d BLOB)")
	tk.MustExec("insert into issue10494 VALUES (1,'x','2010-01-01','blob'), (2, 'y', '2011-01-01', ''), (3, 'y', '2012-01-01', ''), (4, 't', '2012-01-01', 'blob'), (5, null, '2013-01-01', null)")
	tk.MustQuery("SELECT a, b, c, SUM(a) OVER (RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) FROM issue10494 order by a;").Check(
		testkit.Rows(
			"1 x 2010-01-01 00:00:00 15",
			"2 y 2011-01-01 00:00:00 15",
			"3 y 2012-01-01 00:00:00 15",
			"4 t 2012-01-01 00:00:00 15",
			"5 <nil> 2013-01-01 00:00:00 15",
		),
	)

	tk.MustExec("CREATE TABLE td_dec (id DECIMAL(10,2), sex CHAR(1));")
	tk.MustExec("insert into td_dec value (2.0, 'F'), (NULL, 'F'), (1.0, 'F')")
	tk.MustQuery("SELECT id, FIRST_VALUE(id) OVER w FROM td_dec WINDOW w AS (ORDER BY id);").Check(
		testkit.Rows("<nil> <nil>", "1.00 <nil>", "2.00 <nil>"),
	)

	result = tk.MustQuery("select sum(a) over w, sum(b) over w from t window w as (order by a)")
	result.Check(testkit.Rows("2 3", "2 3", "6 6", "6 6"))
	result = tk.MustQuery("select row_number() over w, sum(b) over w from t window w as (order by a)")
	result.Check(testkit.Rows("1 3", "2 3", "3 6", "4 6"))
	result = tk.MustQuery("select row_number() over w, sum(b) over w from t window w as (rows between 1 preceding and 1 following)")
	result.Check(testkit.Rows("1 3", "2 4", "3 5", "4 3"))

	tk.Se.GetSessionVars().MaxChunkSize = 1
	result = tk.MustQuery("select a, row_number() over (partition by a) from t").Sort()
	result.Check(testkit.Rows("1 1", "1 2", "2 1", "2 2"))
}

func (s *testSuite7) TestWindowFunctionsDataReference(c *C) {
	// see https://github.com/pingcap/tidb/issues/11614
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec("drop table if exists t")
	tk.MustExec("create table t(a int, b int)")
	tk.MustExec("insert into t values (2,1),(2,2),(2,3)")

	tk.Se.GetSessionVars().MaxChunkSize = 2
	result := tk.MustQuery("select a, b, rank() over (partition by a order by b) from t")
	result.Check(testkit.Rows("2 1 1", "2 2 2", "2 3 3"))
	result = tk.MustQuery("select a, b, PERCENT_RANK() over (partition by a order by b) from t")
	result.Check(testkit.Rows("2 1 0", "2 2 0.5", "2 3 1"))
	result = tk.MustQuery("select a, b, CUME_DIST() over (partition by a order by b) from t")
	result.Check(testkit.Rows("2 1 0.3333333333333333", "2 2 0.6666666666666666", "2 3 1"))

	// see https://github.com/pingcap/tidb/issues/12415
	result = tk.MustQuery("select b, first_value(b) over (order by b RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) from t")
	result.Check(testkit.Rows("1 1", "2 1", "3 1"))
	result = tk.MustQuery("select b, first_value(b) over (order by b ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) from t")
	result.Check(testkit.Rows("1 1", "2 1", "3 1"))
}

func (s *testSuite7) TestSlidingWindowFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test;")
	tk.MustExec("set @@tidb_enable_pipelined_window_function=0;")
	defer func() {
		tk.MustExec("set @@tidb_enable_pipelined_window_function=1;")
	}()
	idTypes := []string{"FLOAT", "DOUBLE"}
	useHighPrecisions := []string{"ON", "OFF"}
	for _, idType := range idTypes {
		for _, useHighPrecision := range useHighPrecisions {
			tk.MustExec("drop table if exists t;")
			tk.MustExec(fmt.Sprintf("CREATE TABLE t (id %s, sex CHAR(1));", idType))
			tk.MustExec(fmt.Sprintf("SET SESSION windowing_use_high_precision = %s;", useHighPrecision))
			baseTestSlidingWindowFunctions(tk)
		}
	}
}

func (s *testSuite7) TestPipelinedSlidingWindowFunctions(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test;")
	idTypes := []string{"FLOAT", "DOUBLE"}
	useHighPrecisions := []string{"ON", "OFF"}
	for _, idType := range idTypes {
		for _, useHighPrecision := range useHighPrecisions {
			tk.MustExec("drop table if exists t;")
			tk.MustExec(fmt.Sprintf("CREATE TABLE t (id %s, sex CHAR(1));", idType))
			tk.MustExec(fmt.Sprintf("SET SESSION windowing_use_high_precision = %s;", useHighPrecision))
			baseTestSlidingWindowFunctions(tk)
		}
	}
}

func baseTestSlidingWindowFunctions(tk *testkit.TestKit) {
	var result *testkit.Result
	tk.MustExec("insert into t values (1,'M')")
	tk.MustExec("insert into t values (2,'F')")
	tk.MustExec("insert into t values (3,'F')")
	tk.MustExec("insert into t values (4,'F')")
	tk.MustExec("insert into t values (5,'M')")
	tk.MustExec("insert into t values (10,null)")
	tk.MustExec("insert into t values (11,null)")

	tk.MustExec("PREPARE p FROM 'SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN ? PRECEDING and ? PRECEDING) FROM t';")
	tk.MustExec("SET @p1= 1;")
	tk.MustExec("SET @p2= 2;")
	result = tk.MustQuery("EXECUTE p USING @p1, @p2;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("EXECUTE p USING @p2, @p1;")
	result.Check(testkit.Rows("M 0", "F 1", "F 2", "F 2", "M 2", "<nil> 2", "<nil> 2"))
	tk.MustExec("DROP PREPARE p;")
	tk.MustExec("PREPARE p FROM 'SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN ? FOLLOWING and ? FOLLOWING) FROM t';")
	tk.MustExec("SET @p1= 1;")
	tk.MustExec("SET @p2= 2;")
	result = tk.MustQuery("EXECUTE p USING @p2, @p1;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("EXECUTE p USING @p1, @p2;")
	result.Check(testkit.Rows("M 2", "F 2", "F 2", "F 2", "M 2", "<nil> 1", "<nil> 0"))
	tk.MustExec("DROP PREPARE p;")

	// COUNT ROWS
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 2", "F 2", "F 2", "M 2", "<nil> 1", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 1", "F 2", "F 2", "M 2", "<nil> 2", "<nil> 2"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))

	// COUNT RANGE
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 2", "F 2", "F 1", "M 0", "<nil> 1", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 1", "F 2", "F 2", "M 2", "<nil> 0", "<nil> 1"))
	result = tk.MustQuery("SELECT sex, COUNT(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))

	// SUM ROWS
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 5", "F 7", "F 9", "F 15", "M 21", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 3", "F 5", "M 7", "<nil> 9", "<nil> 15"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 3", "F 6", "F 10", "F 15", "M 25", "<nil> 36", "<nil> 36"))

	// SUM RANGE
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 5", "F 7", "F 9", "F 5", "M <nil>", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 3", "F 5", "M 7", "<nil> <nil>", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 6", "F 10", "F 14", "F 12", "M 9", "<nil> 21", "<nil> 21"))
	result = tk.MustQuery("SELECT sex, SUM(id) OVER (ORDER BY id DESC RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("<nil> 21", "<nil> 21", "M 12", "F 14", "F 10", "F 6", "M 3"))

	// AVG ROWS
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2.5", "F 3.5", "F 4.5", "F 7.5", "M 10.5", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 1.5", "F 2.5", "M 3.5", "<nil> 4.5", "<nil> 7.5"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 1.5", "F 2", "F 2.5", "F 3", "M 4.166666666666667", "<nil> 5.142857142857143", "<nil> 5.142857142857143"))

	// AVG RANGE
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2.5", "F 3.5", "F 4.5", "F 5", "M <nil>", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 1.5", "F 2.5", "M 3.5", "<nil> <nil>", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 2.5", "F 3.5", "F 4", "M 4.5", "<nil> 10.5", "<nil> 10.5"))
	result = tk.MustQuery("SELECT sex, AVG(id) OVER (ORDER BY id DESC RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("<nil> 10.5", "<nil> 10.5", "M 4", "F 3.5", "F 2.5", "F 2", "M 1.5"))

	// BIT_XOR ROWS
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 1", "F 7", "F 1", "F 15", "M 1", "<nil> 11", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 1", "F 3", "F 1", "M 7", "<nil> 1", "<nil> 15"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 3", "F 0", "F 4", "F 1", "M 11", "<nil> 0", "<nil> 0"))

	// BIT_XOR RANGE
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 1", "F 7", "F 1", "F 5", "M 0", "<nil> 11", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 0", "F 0", "F 0", "M 0", "<nil> 0", "<nil> 0"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 1", "F 3", "F 1", "M 7", "<nil> 0", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 0", "F 4", "F 0", "F 2", "M 1", "<nil> 1", "<nil> 1"))
	result = tk.MustQuery("SELECT sex, BIT_XOR(id) OVER (ORDER BY id DESC RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("<nil> 1", "<nil> 1", "M 2", "F 0", "F 4", "F 0", "M 3"))

	// MIN ROWS
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 3", "F 4", "F 5", "M 10", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 1", "F 2", "M 3", "<nil> 4", "<nil> 5"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 1", "F 1", "F 1", "F 1", "M 1", "<nil> 1", "<nil> 1"))

	// MIN RANGE
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 3", "F 4", "F 5", "M <nil>", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 1", "F 2", "M 3", "<nil> <nil>", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 1", "F 1", "F 2", "F 3", "M 4", "<nil> 10", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, MIN(id) OVER (ORDER BY id DESC RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("<nil> 10", "<nil> 10", "M 3", "F 2", "F 1", "F 1", "M 1"))

	// MAX ROWS
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id ROWS BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 3", "F 4", "F 5", "F 10", "M 11", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id ROWS BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id ROWS BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 2", "F 3", "M 4", "<nil> 5", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id ROWS BETWEEN 1 PRECEDING and 3 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id ROWS BETWEEN UNBOUNDED PRECEDING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 2", "F 3", "F 4", "F 5", "M 10", "<nil> 11", "<nil> 11"))

	// MAX RANGE
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id RANGE BETWEEN 1 FOLLOWING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 3", "F 4", "F 5", "F 5", "M <nil>", "<nil> 11", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id RANGE BETWEEN 3 FOLLOWING and 1 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F <nil>", "F <nil>", "F <nil>", "M <nil>", "<nil> <nil>", "<nil> <nil>"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id RANGE BETWEEN 2 PRECEDING and 1 PRECEDING) FROM t;")
	result.Check(testkit.Rows("M <nil>", "F 1", "F 2", "F 3", "M 4", "<nil> <nil>", "<nil> 10"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("M 3", "F 4", "F 5", "F 5", "M 5", "<nil> 11", "<nil> 11"))
	result = tk.MustQuery("SELECT sex, MAX(id) OVER (ORDER BY id DESC RANGE BETWEEN 1 PRECEDING and 2 FOLLOWING) FROM t;")
	result.Check(testkit.Rows("<nil> 11", "<nil> 11", "M 5", "F 5", "F 4", "F 3", "M 2"))
}

func (s *testSuite7) TestIssue24264(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec("drop table if exists tbl_2")
	tk.MustExec("create table tbl_2 ( col_10 char(65) collate utf8mb4_unicode_ci not null , col_11 bigint not null , col_12 datetime not null , col_13 bigint unsigned default 327695751717730004 , col_14 timestamp default '2010-11-18' not null , primary key idx_5 ( col_11,col_13 ) /*T![clustered_index] clustered */ , unique key idx_6 ( col_10,col_11,col_13 ) , unique key idx_7 ( col_14,col_12,col_13 ) )")
	tk.MustExec("insert into tbl_2 values ( 'RmF',-5353757041350034197,'1996-01-22',1866803697729291364,'1996-09-11' )")
	tk.MustExec("insert into tbl_2 values ( 'xEOGaB',-6602924241498980347,'2019-02-22',8297270320597030697,'1972-04-04' )")
	tk.MustExec("insert into tbl_2 values ( 'dvUztqgTPAhLdzgEsV',3316448219481769821,'2034-09-12',937089564901142512,'2030-12-04' )")
	tk.MustExec("insert into tbl_2 values ( 'mNoyfbT',-6027094365061219400,'2035-10-10',1752804734961508175,'1992-08-09' )")
	tk.MustExec("insert into tbl_2 values ( 'BDPJMhLYXuKB',6823702503458376955,'2015-04-09',737914379167848827,'2026-04-29' )")
	tk.MustExec("insert into tbl_2 values ( 'WPiaVfPstGohvHd',1308183537252932688,'2020-05-03',5364104746649397703,'1979-01-28' )")
	tk.MustExec("insert into tbl_2 values ( 'lrm',4642935044097656317,'1973-04-29',149081313305673035,'2013-02-03' )")
	tk.MustExec("insert into tbl_2 values ( '',-7361040853169906422,'2024-10-22',6308270832310351889,'1981-02-01' )")
	tk.MustExec("insert into tbl_2 values ( 'uDANahGcLwpSssabD',2235074865448210231,'1992-10-10',7140606140672586593,'1992-11-25' )")
	tk.MustExec("insert into tbl_2 values ( 'TDH',-1911014243756021618,'2013-01-26',2022218243939205750,'1982-04-04' )")
	tk.MustQuery("select   lead(col_13,1,NULL) over w from tbl_2 window w as (order by col_13)").Check(testkit.Rows(
		"737914379167848827",
		"937089564901142512",
		"1752804734961508175",
		"1866803697729291364",
		"2022218243939205750",
		"5364104746649397703",
		"6308270832310351889",
		"7140606140672586593",
		"8297270320597030697",
		"<nil>"))
}

func (s *testSuite7) TestIssue29947(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec(`drop table if exists t_tir89b, t_vejdy`)

	tk.MustExec("CREATE TABLE `t_tir89b` (`c_3pcik` int(11) DEFAULT NULL,`c_0b6nxb` text DEFAULT NULL,`c_qytrlc` double NOT NULL,`c_sroc_c` int(11) DEFAULT NULL,PRIMARY KEY (`c_qytrlc`) /*T![clustered_index] NONCLUSTERED */	) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;")

	tk.MustExec(`INSERT INTO t_tir89b VALUES (66,'cjd1o',87.77,NULL),(134217728,'d_unpd',76.66,NULL),(50,'_13gs',1.46,32),(49,'xclvsc',64.7,48),(7,'1an13',70.86,7),(29,NULL,6.26,6),(8,'hc485b',47.44,2),(84,'d_nlmd',99.3,76),(14,'lbny1c',61.1,47),(45,'9r5bid',25.37,95),(49,'jbz5r',72.99,49),(18,'uode3d',7.21,992),(-8945040,'ftrtib',47.47,20),(29,'algrj',6.28,24),(96,NULL,67.83,24),(5,'s1gfz',89.18,78),(74,'ggqbl',83.89,68),(61,'5n1q7',26.92,6),(10,'4gflb',33.84,28),(48,'xoe0cd',84.71,77),(6,'xkh6i',53.83,19),(5,NULL,89.1,46),(49,'4q6nx',31.5,384),(1,'pgs1',66.8,77),(19,'lltflc',33.49,63),(87,'vd4htc',39.92,-5367008),(47,NULL,28.3,10),(29,'15jqfc',100.11,64),(45,'ii6pm',52.41,61),(0,NULL,85.27,19),(104,'ikpxnb',40.66,955),(40,'gzryzd',36.23,42),(18,'7UPNE',84.27,14),(32,NULL,84.8,53),(51,'2c5lfb',18.98,74),(97,NULL,22.89,6),(70,'guyzyc',96.29,89),(34,'dvdoqb',53.82,1),(94,'6eop6b',81.77,90),(42,'p7vsnd',62.54,NULL);`)

	tk.MustExec("CREATE TABLE `t_vejdy` (`c_iovir` int(11) NOT NULL,`c_r_mw3d` double DEFAULT NULL,`c_uxhghb` int(11) DEFAULT NULL,`c_rb7otb` int(11) NOT NULL,`c_dplyac` int(11) DEFAULT NULL,`c_lmcqed` double DEFAULT NULL,`c_ayaoed` text DEFAULT NULL,`c__zbqr` int(11) DEFAULT NULL,PRIMARY KEY (`c_iovir`,`c_rb7otb`) /*T![clustered_index] NONCLUSTERED */,KEY `t_e1ejcd` (`c_uxhghb`),KEY `t_o6ui_b` (`c_iovir`,`c_r_mw3d`,`c_uxhghb`,`c_rb7otb`,`c_dplyac`,`c_lmcqed`)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;")

	tk.MustExec(`INSERT INTO t_vejdy VALUES (49,100.11,68,57,44,17.93,NULL,84),(38,56.91,78,30,0,53.28,'cjd1o',2),(6,NULL,NULL,88,81,93.47,'0jftkb',54),(73,91.51,31,82,3,38.12,'buesob',40),(7,26.73,7,78,9,NULL,'fd5kgd',49),(80,70.57,4,47,43,25.59,'glpoq',44),(79,94.16,15,0,0,79.55,'0ok94d',56),(58,NULL,50,69,2,65.46,'sm6rj',29),(41472,6.51,70,1080,100,43.18,'fofk4c',43),(0,6.2,57,97,2,56.17,'zqpzq',56),(72,76.66,97,88,95,75.47,'hikxqb',34),(27,1.11,134217728,57,25,NULL,'4gflb',0),(64,NULL,47,69,6,72.5,'w7jmhd',45),(-134217679,88.74,33,82,85,59.89,NULL,26),(59,97.98,37,28,33,61.1,'xioxdd',45),(6,47.31,0,0,-19,38.77,'uxmdlc',17),(82,28.62,36,70,39,11.79,'zzi8cc',2),(33,37.3,55,86,69,60.56,'mn_xx',0),(7,NULL,80,0,17,59.79,'5n1q7',97),(88,50.81,15,30,63,25.37,'ordwed',29),(48,4.32,90,48,38,84.62,'lclx',32),(10,NULL,95,75,1,21.64,NULL,85),(62,NULL,0,30,10,NULL,'7bacud',5),(50,38.81,6,0,6,64.28,'gpibn',57),(1,46.8,21,32,46,33.38,NULL,6),(29,NULL,38,7,91,31.5,'pdzdl',24),(54,6.26,1,85,22,75.63,'gl4_7',29),(1,90.37,63,63,6,61.2,'wvw23b',86),(47,NULL,82,73,0,95.79,'uipcf',NULL),(46,48.1,37,6,1,52.33,'gthpic',0),(41,75.1,7,44,5,84.16,'fe_e5',58),(43,87.71,81,32,28,91.98,'9e5nvc',66),(20,58.21,88,75,92,43.64,'kagroc',66),(91,52.75,22,14,80,NULL,'\'_YN6MD\'',6),(72,94.83,0,49,5,57.82,NULL,23),(7,100.11,0,92,13,6.28,NULL,0);`)

	tk.MustExec("begin")
	tk.MustExec("delete from t_tir89b where t_tir89b.c_3pcik >= t_tir89b.c_sroc_c;")
	result := tk.MustQuery("select * from (select count(*) over (partition by ref_0.c_0b6nxb order by ref_0.c_3pcik) as c0 from t_tir89b as ref_0) as subq_0 where subq_0.c0 <> 1;")
	result.Check(testkit.Rows("2", "3"))
	tk.MustExec("commit")
}