insert_test.go

// Copyright 2018 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,
// See the License for the specific language governing permissions and
// limitations under the License.

package executor_test

import (
	"fmt"
	"strconv"
	"strings"
	"sync"

	. "github.com/pingcap/check"
	"github.com/pingcap/parser/terror"
	"github.com/pingcap/tidb/config"
	"github.com/pingcap/tidb/sessionctx/variable"
	"github.com/pingcap/tidb/table"
	"github.com/pingcap/tidb/types"
	"github.com/pingcap/tidb/util/testkit"
)

func (s *testSuite8) TestInsertOnDuplicateKey(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a1 bigint primary key, b1 bigint);`)
	tk.MustExec(`create table t2(a2 bigint primary key, b2 bigint);`)
	tk.MustExec(`insert into t1 values(1, 100);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t2 values(1, 200);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")

	tk.MustExec(`insert into t1 select a2, b2 from t2 on duplicate key update b1 = a2;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 1  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 1"))

	tk.MustExec(`insert into t1 select a2, b2 from t2 on duplicate key update b1 = b2;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 1  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 200"))

	tk.MustExec(`insert into t1 select a2, b2 from t2 on duplicate key update a1 = a2;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(0))
	tk.CheckLastMessage("Records: 1  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 200"))

	tk.MustExec(`insert into t1 select a2, b2 from t2 on duplicate key update b1 = 300;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 1  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 300"))

	tk.MustExec(`insert into t1 values(1, 1) on duplicate key update b1 = 400;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 400"))

	tk.MustExec(`insert into t1 select 1, 500 from t2 on duplicate key update b1 = 400;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(0))
	tk.CheckLastMessage("Records: 1  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows("1 400"))

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a bigint primary key, b bigint);`)
	tk.MustExec(`create table t2(a bigint primary key, b bigint);`)
	_, err := tk.Exec(`insert into t1 select * from t2 on duplicate key update c = t2.b;`)
	c.Assert(err.Error(), Equals, `[planner:1054]Unknown column 'c' in 'field list'`)

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a bigint primary key, b bigint);`)
	tk.MustExec(`create table t2(a bigint primary key, b bigint);`)
	_, err = tk.Exec(`insert into t1 select * from t2 on duplicate key update a = b;`)
	c.Assert(err.Error(), Equals, `[planner:1052]Column 'b' in field list is ambiguous`)

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a bigint primary key, b bigint);`)
	tk.MustExec(`create table t2(a bigint primary key, b bigint);`)
	_, err = tk.Exec(`insert into t1 select * from t2 on duplicate key update c = b;`)
	c.Assert(err.Error(), Equals, `[planner:1054]Unknown column 'c' in 'field list'`)

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a1 bigint primary key, b1 bigint);`)
	tk.MustExec(`create table t2(a2 bigint primary key, b2 bigint);`)
	_, err = tk.Exec(`insert into t1 select * from t2 on duplicate key update a1 = values(b2);`)
	c.Assert(err.Error(), Equals, `[planner:1054]Unknown column 'b2' in 'field list'`)

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(a1 bigint primary key, b1 bigint);`)
	tk.MustExec(`create table t2(a2 bigint primary key, b2 bigint);`)
	tk.MustExec(`insert into t1 values(1, 100);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t2 values(1, 200);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t1 select * from t2 on duplicate key update b1 = values(b1) + b2;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 1  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t1`).Check(testkit.Rows("1 400"))
	tk.MustExec(`insert into t1 select * from t2 on duplicate key update b1 = values(b1) + b2;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(0))
	tk.CheckLastMessage("Records: 1  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t1`).Check(testkit.Rows("1 400"))

	tk.MustExec(`drop table if exists t;`)
	tk.MustExec(`create table t(k1 bigint, k2 bigint, val bigint, primary key(k1, k2));`)
	tk.MustExec(`insert into t (val, k1, k2) values (3, 1, 2);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(`1 2 3`))
	tk.MustExec(`insert into t (val, k1, k2) select c, a, b from (select 1 as a, 2 as b, 4 as c) tmp on duplicate key update val = tmp.c;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 1  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(`1 2 4`))

	tk.MustExec(`drop table if exists t;`)
	tk.MustExec(`create table t(k1 double, k2 double, v double, primary key(k1, k2));`)
	tk.MustExec(`insert into t (v, k1, k2) select c, a, b from (select "3" c, "1" a, "2" b) tmp on duplicate key update v=c;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("Records: 1  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(`1 2 3`))
	tk.MustExec(`insert into t (v, k1, k2) select c, a, b from (select "3" c, "1" a, "2" b) tmp on duplicate key update v=c;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(0))
	tk.CheckLastMessage("Records: 1  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(`1 2 3`))

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(id int, a int, b int);`)
	tk.MustExec(`insert into t1 values (1, 1, 1);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t1 values (2, 2, 1);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t1 values (3, 3, 1);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`create table t2(a int primary key, b int, unique(b));`)
	tk.MustExec(`insert into t2 select a, b from t1 order by id on duplicate key update a=t1.a, b=t1.b;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(5))
	tk.CheckLastMessage("Records: 3  Duplicates: 2  Warnings: 0")
	tk.MustQuery(`select * from t2 order by a;`).Check(testkit.Rows(`3 1`))

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(id int, a int, b int);`)
	tk.MustExec(`insert into t1 values (1, 1, 1);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t1 values (2, 1, 2);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`insert into t1 values (3, 3, 1);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(1))
	tk.CheckLastMessage("")
	tk.MustExec(`create table t2(a int primary key, b int, unique(b));`)
	tk.MustExec(`insert into t2 select a, b from t1 order by id on duplicate key update a=t1.a, b=t1.b;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(4))
	tk.CheckLastMessage("Records: 3  Duplicates: 1  Warnings: 0")
	tk.MustQuery(`select * from t2 order by a;`).Check(testkit.Rows(`1 2`, `3 1`))

	tk.MustExec(`drop table if exists t1, t2;`)
	tk.MustExec(`create table t1(id int, a int, b int, c int);`)
	tk.MustExec(`insert into t1 values (1, 1, 1, 1);`)
	tk.MustExec(`insert into t1 values (2, 2, 1, 2);`)
	tk.MustExec(`insert into t1 values (3, 3, 2, 2);`)
	tk.MustExec(`insert into t1 values (4, 4, 2, 2);`)
	tk.MustExec(`create table t2(a int primary key, b int, c int, unique(b), unique(c));`)
	tk.MustExec(`insert into t2 select a, b, c from t1 order by id on duplicate key update b=t2.b, c=t2.c;`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(2))
	tk.CheckLastMessage("Records: 4  Duplicates: 0  Warnings: 0")
	tk.MustQuery(`select * from t2 order by a;`).Check(testkit.Rows(`1 1 1`, `3 2 2`))

	tk.MustExec(`drop table if exists t1`)
	tk.MustExec(`create table t1(a int primary key, b int);`)
	tk.MustExec(`insert into t1 values(1,1),(2,2),(3,3),(4,4),(5,5);`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(5))
	tk.CheckLastMessage("Records: 5  Duplicates: 0  Warnings: 0")
	tk.MustExec(`insert into t1 values(4,14),(5,15),(6,16),(7,17),(8,18) on duplicate key update b=b+10`)
	c.Assert(tk.Se.AffectedRows(), Equals, uint64(7))
	tk.CheckLastMessage("Records: 5  Duplicates: 2  Warnings: 0")

	// reproduce insert on duplicate key update bug under new row format.
	tk.MustExec(`drop table if exists t1`)
	tk.MustExec(`create table t1(c1 decimal(6,4), primary key(c1))`)
	tk.MustExec(`insert into t1 set c1 = 0.1`)
	tk.MustExec(`insert into t1 set c1 = 0.1 on duplicate key update c1 = 1`)
	tk.MustQuery(`select * from t1 use index(primary)`).Check(testkit.Rows(`1.0000`))
}

func (s *testSuite2) TestInsertReorgDelete(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")

	inputs := []struct {
		typ string
		dat string
	}{
		{"year", "'2004'"},
		{"year", "2004"},
		{"bit", "1"},
		{"smallint unsigned", "1"},
		{"int unsigned", "1"},
		{"smallint", "-1"},
		{"int", "-1"},
		{"decimal(6,4)", "'1.1'"},
		{"decimal", "1.1"},
		{"numeric", "-1"},
		{"float", "1.2"},
		{"double", "1.2"},
		{"double", "1.3"},
		{"real", "1.4"},
		{"date", "'2020-01-01'"},
		{"time", "'20:00:00'"},
		{"datetime", "'2020-01-01 22:22:22'"},
		{"timestamp", "'2020-01-01 22:22:22'"},
		{"year", "'2020'"},
		{"char(15)", "'test'"},
		{"varchar(15)", "'test'"},
		{"binary(3)", "'a'"},
		{"varbinary(3)", "'b'"},
		{"blob", "'test'"},
		{"text", "'test'"},
		{"enum('a', 'b')", "'a'"},
		{"set('a', 'b')", "'a,b'"},
	}

	for _, i := range inputs {
		tk.MustExec(`drop table if exists t1`)
		tk.MustExec(fmt.Sprintf(`create table t1(c1 %s)`, i.typ))
		tk.MustExec(fmt.Sprintf(`insert into t1 set c1 = %s`, i.dat))
		switch i.typ {
		case "blob", "text":
			tk.MustExec(`alter table t1 add index idx(c1(3))`)
		default:
			tk.MustExec(`alter table t1 add index idx(c1)`)
		}
		tk.MustExec(`delete from t1`)
		tk.MustExec(`admin check table t1`)
	}
}

func (s *testSuite3) TestUpdateDuplicateKey(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")

	tk.MustExec(`drop table if exists t;`)
	tk.MustExec(`create table c(i int,j int,k int,primary key(i,j,k));`)
	tk.MustExec(`insert into c values(1,2,3);`)
	tk.MustExec(`insert into c values(1,2,4);`)
	_, err := tk.Exec(`update c set i=1,j=2,k=4 where i=1 and j=2 and k=3;`)
	c.Assert(err.Error(), Equals, "[kv:1062]Duplicate entry '1-2-4' for key 'PRIMARY'")
}

func (s *testSuite3) TestInsertWrongValueForField(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec(`drop table if exists t1;`)
	tk.MustExec(`create table t1(a bigint);`)
	_, err := tk.Exec(`insert into t1 values("asfasdfsajhlkhlksdaf");`)
	c.Assert(terror.ErrorEqual(err, table.ErrTruncatedWrongValueForField), IsTrue)
}

func (s *testSuite3) TestInsertDateTimeWithTimeZone(c *C) {
	tk := testkit.NewTestKit(c, s.store)

	tk.MustExec(`use test;`)
	tk.MustExec(`set time_zone="+09:00";`)
	tk.MustExec(`drop table if exists t;`)
	tk.MustExec(`create table t (id int, c1 datetime not null default CURRENT_TIMESTAMP);`)
	tk.MustExec(`set TIMESTAMP = 1234;`)
	tk.MustExec(`insert t (id) values (1);`)

	tk.MustQuery(`select * from t;`).Check(testkit.Rows(
		`1 1970-01-01 09:20:34`,
	))
}

func (s *testSuite3) TestInsertZeroYear(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec(`drop table if exists t1;`)
	tk.MustExec(`create table t1(a year(4));`)
	tk.MustExec(`insert into t1 values(0000),(00),("0000"),("000"), ("00"), ("0"), (79), ("79");`)
	tk.MustQuery(`select * from t1;`).Check(testkit.Rows(
		`0`,
		`0`,
		`0`,
		`2000`,
		`2000`,
		`2000`,
		`1979`,
		`1979`,
	))

	tk.MustExec(`drop table if exists t;`)
	tk.MustExec(`create table t(f_year year NOT NULL DEFAULT '0000')ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;`)
	tk.MustExec(`insert into t values();`)
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(
		`0`,
	))
	tk.MustExec(`insert into t values('0000');`)
	tk.MustQuery(`select * from t;`).Check(testkit.Rows(
		`0`,
		`0`,
	))
}

func (s *testSuiteP1) TestAllowInvalidDates(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`drop table if exists t1, t2, t3, t4;`)
	tk.MustExec(`create table t1(d date);`)
	tk.MustExec(`create table t2(d datetime);`)
	tk.MustExec(`create table t3(d date);`)
	tk.MustExec(`create table t4(d datetime);`)

	runWithMode := func(mode string) {
		inputs := []string{"0000-00-00", "2019-00-00", "2019-01-00", "2019-00-01", "2019-02-31"}
		results := testkit.Rows(`0 0 0`, `2019 0 0`, `2019 1 0`, `2019 0 1`, `2019 2 31`)
		oldMode := tk.MustQuery(`select @@sql_mode`).Rows()[0][0]
		defer func() {
			tk.MustExec(fmt.Sprintf(`set sql_mode='%s'`, oldMode))
		}()

		tk.MustExec(`truncate t1;truncate t2;truncate t3;truncate t4;`)
		tk.MustExec(fmt.Sprintf(`set sql_mode='%s';`, mode))
		for _, input := range inputs {
			tk.MustExec(fmt.Sprintf(`insert into t1 values ('%s')`, input))
			tk.MustExec(fmt.Sprintf(`insert into t2 values ('%s')`, input))
		}
		tk.MustQuery(`select year(d), month(d), day(d) from t1;`).Check(results)
		tk.MustQuery(`select year(d), month(d), day(d) from t2;`).Check(results)
		tk.MustExec(`insert t3 select d from t1;`)
		tk.MustQuery(`select year(d), month(d), day(d) from t3;`).Check(results)
		tk.MustExec(`insert t4 select d from t2;`)
		tk.MustQuery(`select year(d), month(d), day(d) from t4;`).Check(results)
	}

	runWithMode("STRICT_TRANS_TABLES,ALLOW_INVALID_DATES")
	runWithMode("ALLOW_INVALID_DATES")
}

func (s *testSuite3) TestInsertWithAutoidSchema(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table t1(id int primary key auto_increment, n int);`)
	tk.MustExec(`create table t2(id int unsigned primary key auto_increment, n int);`)
	tk.MustExec(`create table t3(id tinyint primary key auto_increment, n int);`)
	tk.MustExec(`create table t4(id int primary key, n float auto_increment, key I_n(n));`)
	tk.MustExec(`create table t5(id int primary key, n float unsigned auto_increment, key I_n(n));`)
	tk.MustExec(`create table t6(id int primary key, n double auto_increment, key I_n(n));`)
	tk.MustExec(`create table t7(id int primary key, n double unsigned auto_increment, key I_n(n));`)
	// test for inserting multiple values
	tk.MustExec(`create table t8(id int primary key auto_increment, n int);`)

	tests := []struct {
		insert string
		query  string
		result [][]interface{}
	}{
		{
			`insert into t1(id, n) values(1, 1)`,
			`select * from t1 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t1(n) values(2)`,
			`select * from t1 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t1(n) values(3)`,
			`select * from t1 where id = 3`,
			testkit.Rows(`3 3`),
		},
		{
			`insert into t1(id, n) values(-1, 4)`,
			`select * from t1 where id = -1`,
			testkit.Rows(`-1 4`),
		},
		{
			`insert into t1(n) values(5)`,
			`select * from t1 where id = 4`,
			testkit.Rows(`4 5`),
		},
		{
			`insert into t1(id, n) values('5', 6)`,
			`select * from t1 where id = 5`,
			testkit.Rows(`5 6`),
		},
		{
			`insert into t1(n) values(7)`,
			`select * from t1 where id = 6`,
			testkit.Rows(`6 7`),
		},
		{
			`insert into t1(id, n) values(7.4, 8)`,
			`select * from t1 where id = 7`,
			testkit.Rows(`7 8`),
		},
		{
			`insert into t1(id, n) values(7.5, 9)`,
			`select * from t1 where id = 8`,
			testkit.Rows(`8 9`),
		},
		{
			`insert into t1(n) values(9)`,
			`select * from t1 where id = 9`,
			testkit.Rows(`9 9`),
		},
		// test last insert id
		{
			`insert into t1 values(3000, -1), (null, -2)`,
			`select * from t1 where id = 3000`,
			testkit.Rows(`3000 -1`),
		},
		{
			`;`,
			`select * from t1 where id = 3001`,
			testkit.Rows(`3001 -2`),
		},
		{
			`;`,
			`select last_insert_id()`,
			testkit.Rows(`3001`),
		},
		{
			`insert into t2(id, n) values(1, 1)`,
			`select * from t2 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t2(n) values(2)`,
			`select * from t2 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t2(n) values(3)`,
			`select * from t2 where id = 3`,
			testkit.Rows(`3 3`),
		},
		{
			`insert into t3(id, n) values(1, 1)`,
			`select * from t3 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t3(n) values(2)`,
			`select * from t3 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t3(n) values(3)`,
			`select * from t3 where id = 3`,
			testkit.Rows(`3 3`),
		},
		{
			`insert into t3(id, n) values(-1, 4)`,
			`select * from t3 where id = -1`,
			testkit.Rows(`-1 4`),
		},
		{
			`insert into t3(n) values(5)`,
			`select * from t3 where id = 4`,
			testkit.Rows(`4 5`),
		},
		{
			`insert into t4(id, n) values(1, 1)`,
			`select * from t4 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t4(id) values(2)`,
			`select * from t4 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t4(id, n) values(3, -1)`,
			`select * from t4 where id = 3`,
			testkit.Rows(`3 -1`),
		},
		{
			`insert into t4(id) values(4)`,
			`select * from t4 where id = 4`,
			testkit.Rows(`4 3`),
		},
		{
			`insert into t4(id, n) values(5, 5.5)`,
			`select * from t4 where id = 5`,
			testkit.Rows(`5 5.5`),
		},
		{
			`insert into t4(id) values(6)`,
			`select * from t4 where id = 6`,
			testkit.Rows(`6 7`),
		},
		{
			`insert into t4(id, n) values(7, '7.7')`,
			`select * from t4 where id = 7`,
			testkit.Rows(`7 7.7`),
		},
		{
			`insert into t4(id) values(8)`,
			`select * from t4 where id = 8`,
			testkit.Rows(`8 9`),
		},
		{
			`insert into t4(id, n) values(9, 10.4)`,
			`select * from t4 where id = 9`,
			testkit.Rows(`9 10.4`),
		},
		{
			`insert into t4(id) values(10)`,
			`select * from t4 where id = 10`,
			testkit.Rows(`10 11`),
		},
		{
			`insert into t5(id, n) values(1, 1)`,
			`select * from t5 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t5(id) values(2)`,
			`select * from t5 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t5(id) values(3)`,
			`select * from t5 where id = 3`,
			testkit.Rows(`3 3`),
		},
		{
			`insert into t6(id, n) values(1, 1)`,
			`select * from t6 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t6(id) values(2)`,
			`select * from t6 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t6(id, n) values(3, -1)`,
			`select * from t6 where id = 3`,
			testkit.Rows(`3 -1`),
		},
		{
			`insert into t6(id) values(4)`,
			`select * from t6 where id = 4`,
			testkit.Rows(`4 3`),
		},
		{
			`insert into t6(id, n) values(5, 5.5)`,
			`select * from t6 where id = 5`,
			testkit.Rows(`5 5.5`),
		},
		{
			`insert into t6(id) values(6)`,
			`select * from t6 where id = 6`,
			testkit.Rows(`6 7`),
		},
		{
			`insert into t6(id, n) values(7, '7.7')`,
			`select * from t4 where id = 7`,
			testkit.Rows(`7 7.7`),
		},
		{
			`insert into t6(id) values(8)`,
			`select * from t4 where id = 8`,
			testkit.Rows(`8 9`),
		},
		{
			`insert into t6(id, n) values(9, 10.4)`,
			`select * from t6 where id = 9`,
			testkit.Rows(`9 10.4`),
		},
		{
			`insert into t6(id) values(10)`,
			`select * from t6 where id = 10`,
			testkit.Rows(`10 11`),
		},
		{
			`insert into t7(id, n) values(1, 1)`,
			`select * from t7 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`insert into t7(id) values(2)`,
			`select * from t7 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`insert into t7(id) values(3)`,
			`select * from t7 where id = 3`,
			testkit.Rows(`3 3`),
		},

		// the following is test for insert multiple values.
		{
			`insert into t8(n) values(1),(2)`,
			`select * from t8 where id = 1`,
			testkit.Rows(`1 1`),
		},
		{
			`;`,
			`select * from t8 where id = 2`,
			testkit.Rows(`2 2`),
		},
		{
			`;`,
			`select last_insert_id();`,
			testkit.Rows(`1`),
		},
		// test user rebase and auto alloc mixture.
		{
			`insert into t8 values(null, 3),(-1, -1),(null,4),(null, 5)`,
			`select * from t8 where id = 3`,
			testkit.Rows(`3 3`),
		},
		// -1 won't rebase allocator here cause -1 < base.
		{
			`;`,
			`select * from t8 where id = -1`,
			testkit.Rows(`-1 -1`),
		},
		{
			`;`,
			`select * from t8 where id = 4`,
			testkit.Rows(`4 4`),
		},
		{
			`;`,
			`select * from t8 where id = 5`,
			testkit.Rows(`5 5`),
		},
		{
			`;`,
			`select last_insert_id();`,
			testkit.Rows(`3`),
		},
		{
			`insert into t8 values(null, 6),(10, 7),(null, 8)`,
			`select * from t8 where id = 6`,
			testkit.Rows(`6 6`),
		},
		// 10 will rebase allocator here.
		{
			`;`,
			`select * from t8 where id = 10`,
			testkit.Rows(`10 7`),
		},
		{
			`;`,
			`select * from t8 where id = 11`,
			testkit.Rows(`11 8`),
		},
		{
			`;`,
			`select last_insert_id()`,
			testkit.Rows(`6`),
		},
		// fix bug for last_insert_id should be first allocated id in insert rows (skip the rebase id).
		{
			`insert into t8 values(100, 9),(null,10),(null,11)`,
			`select * from t8 where id = 100`,
			testkit.Rows(`100 9`),
		},
		{
			`;`,
			`select * from t8 where id = 101`,
			testkit.Rows(`101 10`),
		},
		{
			`;`,
			`select * from t8 where id = 102`,
			testkit.Rows(`102 11`),
		},
		{
			`;`,
			`select last_insert_id()`,
			testkit.Rows(`101`),
		},
		// test with sql_mode: NO_AUTO_VALUE_ON_ZERO.
		{
			`;`,
			`select @@sql_mode`,
			testkit.Rows(`ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION`),
		},
		{
			`;`,
			"set session sql_mode = `ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,NO_AUTO_VALUE_ON_ZERO`",
			nil,
		},
		{
			`insert into t8 values (0, 12), (null, 13)`,
			`select * from t8 where id = 0`,
			testkit.Rows(`0 12`),
		},
		{
			`;`,
			`select * from t8 where id = 103`,
			testkit.Rows(`103 13`),
		},
		{
			`;`,
			`select last_insert_id()`,
			testkit.Rows(`103`),
		},
		// test without sql_mode: NO_AUTO_VALUE_ON_ZERO.
		{
			`;`,
			"set session sql_mode = `ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION`",
			nil,
		},
		// value 0 will be substitute by autoid.
		{
			`insert into t8 values (0, 14), (null, 15)`,
			`select * from t8 where id = 104`,
			testkit.Rows(`104 14`),
		},
		{
			`;`,
			`select * from t8 where id = 105`,
			testkit.Rows(`105 15`),
		},
		{
			`;`,
			`select last_insert_id()`,
			testkit.Rows(`104`),
		},
		// last test : auto increment allocation can find in retryInfo.
		{
			`retry : insert into t8 values (null, 16), (null, 17)`,
			`select * from t8 where id = 1000`,
			testkit.Rows(`1000 16`),
		},
		{
			`;`,
			`select * from t8 where id = 1001`,
			testkit.Rows(`1001 17`),
		},
		{
			`;`,
			`select last_insert_id()`,
			// this insert doesn't has the last_insert_id, should be same as the last insert case.
			testkit.Rows(`104`),
		},
	}

	for _, tt := range tests {
		if strings.HasPrefix(tt.insert, "retry : ") {
			// it's the last retry insert case, change the sessionVars.
			retryInfo := &variable.RetryInfo{Retrying: true}
			retryInfo.AddAutoIncrementID(1000)
			retryInfo.AddAutoIncrementID(1001)
			tk.Se.GetSessionVars().RetryInfo = retryInfo
			tk.MustExec(tt.insert[8:])
			tk.Se.GetSessionVars().RetryInfo = &variable.RetryInfo{}
		} else {
			tk.MustExec(tt.insert)
		}
		if tt.query == "set session sql_mode = `ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,NO_AUTO_VALUE_ON_ZERO`" ||
			tt.query == "set session sql_mode = `ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION`" {
			tk.MustExec(tt.query)
		} else {
			tk.MustQuery(tt.query).Check(tt.result)
		}
	}

}

func (s *testSuite3) TestPartitionInsertOnDuplicate(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table t1 (a int,b int,primary key(a,b)) partition by range(a) (partition p0 values less than (100),partition p1 values less than (1000))`)
	tk.MustExec(`insert into t1 set a=1, b=1`)
	tk.MustExec(`insert into t1 set a=1,b=1 on duplicate key update a=1,b=1`)
	tk.MustQuery(`select * from t1`).Check(testkit.Rows("1 1"))

	tk.MustExec(`create table t2 (a int,b int,primary key(a,b)) partition by hash(a) partitions 4`)
	tk.MustExec(`insert into t2 set a=1,b=1;`)
	tk.MustExec(`insert into t2 set a=1,b=1 on duplicate key update a=1,b=1`)
	tk.MustQuery(`select * from t2`).Check(testkit.Rows("1 1"))

	tk.MustExec(`CREATE TABLE t3 (a int, b int, c int, d int, e int,
  PRIMARY KEY (a,b),
  UNIQUE KEY (b,c,d)
) PARTITION BY RANGE ( b ) (
  PARTITION p0 VALUES LESS THAN (4),
  PARTITION p1 VALUES LESS THAN (7),
  PARTITION p2 VALUES LESS THAN (11)
)`)
	tk.MustExec("insert into t3 values (1,2,3,4,5)")
	tk.MustExec("insert into t3 values (1,2,3,4,5),(6,2,3,4,6) on duplicate key update e = e + values(e)")
	tk.MustQuery("select * from t3").Check(testkit.Rows("1 2 3 4 16"))
}

func (s *testSuite3) TestBit(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table t1 (a bit(3))`)
	_, err := tk.Exec("insert into t1 values(-1)")
	c.Assert(types.ErrDataTooLong.Equal(err), IsTrue)
	c.Assert(err.Error(), Matches, ".*Data too long for column 'a' at.*")
	_, err = tk.Exec("insert into t1 values(9)")
	c.Assert(err.Error(), Matches, ".*Data too long for column 'a' at.*")

	tk.MustExec(`create table t64 (a bit(64))`)
	tk.MustExec("insert into t64 values(-1)")
	tk.MustExec("insert into t64 values(18446744073709551615)")      // 2^64 - 1
	_, err = tk.Exec("insert into t64 values(18446744073709551616)") // z^64
	c.Assert(err.Error(), Matches, ".*Out of range value for column 'a' at.*")

}

func (s *testSuiteP1) TestAllocateContinuousRowID(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table t1 (a int,b int, key I_a(a));`)
	wg := sync.WaitGroup{}
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(idx int) {
			defer wg.Done()
			tk := testkit.NewTestKitWithInit(c, s.store)
			for j := 0; j < 10; j++ {
				k := strconv.Itoa(idx*100 + j)
				sql := "insert into t1(a,b) values (" + k + ", 2)"
				for t := 0; t < 20; t++ {
					sql += ",(" + k + ",2)"
				}
				tk.MustExec(sql)
				q := "select _tidb_rowid from t1 where a=" + k
				rows := tk.MustQuery(q).Rows()
				c.Assert(len(rows), Equals, 21)
				last := 0
				for _, r := range rows {
					c.Assert(len(r), Equals, 1)
					v, err := strconv.Atoi(r[0].(string))
					c.Assert(err, Equals, nil)
					if last > 0 {
						c.Assert(last+1, Equals, v)
					}
					last = v
				}
			}
		}(i)
	}
	wg.Wait()
}

func (s *testSuite3) TestJiraIssue5366(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table bug (a varchar(100))`)
	tk.MustExec(` insert into bug select  ifnull(JSON_UNQUOTE(JSON_EXTRACT('[{"amount":2000,"feeAmount":0,"merchantNo":"20190430140319679394","shareBizCode":"20160311162_SECOND"}]', '$[0].merchantNo')),'') merchant_no union SELECT '20180531557' merchant_no;`)
	tk.MustQuery(`select * from bug`).Sort().Check(testkit.Rows("20180531557", "20190430140319679394"))
}

func (s *testSuite3) TestDMLCast(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`create table t (a int, b double)`)
	tk.MustExec(`insert into t values (ifnull('',0)+0, 0)`)
	tk.MustExec(`insert into t values (0, ifnull('',0)+0)`)
	tk.MustQuery(`select * from t`).Check(testkit.Rows("0 0", "0 0"))
	_, err := tk.Exec(`insert into t values ('', 0)`)
	c.Assert(err, NotNil)
	_, err = tk.Exec(`insert into t values (0, '')`)
	c.Assert(err, NotNil)
	_, err = tk.Exec(`update t set a = ''`)
	c.Assert(err, NotNil)
	_, err = tk.Exec(`update t set b = ''`)
	c.Assert(err, NotNil)
	tk.MustExec("update t set a = ifnull('',0)+0")
	tk.MustExec("update t set b = ifnull('',0)+0")
	tk.MustExec("delete from t where a = ''")
	tk.MustQuery(`select * from t`).Check(testkit.Rows())
}

// There is a potential issue in MySQL: when the value of auto_increment_offset is greater
// than that of auto_increment_increment, the value of auto_increment_offset is ignored
// (https://dev.mysql.com/doc/refman/8.0/en/replication-options-master.html#sysvar_auto_increment_increment),
// This issue is a flaw of the implementation of MySQL and it doesn't exist in TiDB.
func (s *testSuite3) TestAutoIDIncrementAndOffset(c *C) {
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	// Test for offset is larger than increment.
	tk.Se.GetSessionVars().AutoIncrementIncrement = 5
	tk.Se.GetSessionVars().AutoIncrementOffset = 10
	tk.MustExec(`create table io (a int key auto_increment)`)
	tk.MustExec(`insert into io values (null),(null),(null)`)
	tk.MustQuery(`select * from io`).Check(testkit.Rows("10", "15", "20"))
	tk.MustExec(`drop table io`)

	// Test handle is PK.
	tk.MustExec(`create table io (a int key auto_increment)`)
	tk.Se.GetSessionVars().AutoIncrementOffset = 10
	tk.Se.GetSessionVars().AutoIncrementIncrement = 2
	tk.MustExec(`insert into io values (),(),()`)
	tk.MustQuery(`select * from io`).Check(testkit.Rows("10", "12", "14"))
	tk.MustExec(`delete from io`)

	// Test reset the increment.
	tk.Se.GetSessionVars().AutoIncrementIncrement = 5
	tk.MustExec(`insert into io values (),(),()`)
	tk.MustQuery(`select * from io`).Check(testkit.Rows("15", "20", "25"))
	tk.MustExec(`delete from io`)

	tk.Se.GetSessionVars().AutoIncrementIncrement = 10
	tk.MustExec(`insert into io values (),(),()`)
	tk.MustQuery(`select * from io`).Check(testkit.Rows("30", "40", "50"))
	tk.MustExec(`delete from io`)

	tk.Se.GetSessionVars().AutoIncrementIncrement = 5
	tk.MustExec(`insert into io values (),(),()`)
	tk.MustQuery(`select * from io`).Check(testkit.Rows("55", "60", "65"))
	tk.MustExec(`drop table io`)

	// Test handle is not PK.
	tk.Se.GetSessionVars().AutoIncrementIncrement = 2
	tk.Se.GetSessionVars().AutoIncrementOffset = 10
	tk.MustExec(`create table io (a int, b int auto_increment, key(b))`)
	tk.MustExec(`insert into io(b) values (null),(null),(null)`)
	// AutoID allocation will take increment and offset into consideration.
	tk.MustQuery(`select b from io`).Check(testkit.Rows("10", "12", "14"))
	// HandleID allocation will ignore the increment and offset.
	tk.MustQuery(`select _tidb_rowid from io`).Check(testkit.Rows("15", "16", "17"))
	tk.MustExec(`delete from io`)

	tk.Se.GetSessionVars().AutoIncrementIncrement = 10
	tk.MustExec(`insert into io(b) values (null),(null),(null)`)
	tk.MustQuery(`select b from io`).Check(testkit.Rows("20", "30", "40"))
	tk.MustQuery(`select _tidb_rowid from io`).Check(testkit.Rows("41", "42", "43"))

	// Test invalid value.
	tk.Se.GetSessionVars().AutoIncrementIncrement = -1
	tk.Se.GetSessionVars().AutoIncrementOffset = -2
	_, err := tk.Exec(`insert into io(b) values (null),(null),(null)`)
	c.Assert(err, NotNil)
	c.Assert(err.Error(), Equals, "[autoid:8060]Invalid auto_increment settings: auto_increment_increment: -1, auto_increment_offset: -2, both of them must be in range [1..65535]")
	tk.MustExec(`delete from io`)

	tk.Se.GetSessionVars().AutoIncrementIncrement = 65536
	tk.Se.GetSessionVars().AutoIncrementOffset = 65536
	_, err = tk.Exec(`insert into io(b) values (null),(null),(null)`)
	c.Assert(err, NotNil)
	c.Assert(err.Error(), Equals, "[autoid:8060]Invalid auto_increment settings: auto_increment_increment: 65536, auto_increment_offset: 65536, both of them must be in range [1..65535]")
}

var _ = SerialSuites(&testSuite9{&baseTestSuite{}})

type testSuite9 struct {
	*baseTestSuite
}

func (s *testSuite9) TestAutoRandomID(c *C) {
	allowAutoRandom := config.GetGlobalConfig().Experimental.AllowAutoRandom
	if !allowAutoRandom {
		config.GetGlobalConfig().Experimental.AllowAutoRandom = true
		defer func() {
			config.GetGlobalConfig().Experimental.AllowAutoRandom = false
		}()
	}

	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`drop table if exists ar`)
	tk.MustExec(`create table ar (id int key auto_random, name char(10))`)

	tk.MustExec(`insert into ar(id) values (null)`)
	rs := tk.MustQuery(`select id from ar`)
	c.Assert(len(rs.Rows()), Equals, 1)
	firstValue, err := strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(id) values (0)`)
	rs = tk.MustQuery(`select id from ar`)
	c.Assert(len(rs.Rows()), Equals, 1)
	firstValue, err = strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(name) values ('a')`)
	rs = tk.MustQuery(`select id from ar`)
	c.Assert(len(rs.Rows()), Equals, 1)
	firstValue, err = strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))

	tk.MustExec(`drop table ar`)
}

func (s *testSuite9) TestMultiAutoRandomID(c *C) {
	allowAutoRandom := config.GetGlobalConfig().Experimental.AllowAutoRandom
	if !allowAutoRandom {
		config.GetGlobalConfig().Experimental.AllowAutoRandom = true
		defer func() {
			config.GetGlobalConfig().Experimental.AllowAutoRandom = false
		}()
	}

	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`drop table if exists ar`)
	tk.MustExec(`create table ar (id int key auto_random, name char(10))`)

	tk.MustExec(`insert into ar(id) values (null),(null),(null)`)
	rs := tk.MustQuery(`select id from ar order by id`)
	c.Assert(len(rs.Rows()), Equals, 3)
	firstValue, err := strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	c.Assert(rs.Rows()[1][0].(string), Equals, fmt.Sprintf("%d", firstValue+1))
	c.Assert(rs.Rows()[2][0].(string), Equals, fmt.Sprintf("%d", firstValue+2))
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(id) values (0),(0),(0)`)
	rs = tk.MustQuery(`select id from ar order by id`)
	c.Assert(len(rs.Rows()), Equals, 3)
	firstValue, err = strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	c.Assert(rs.Rows()[1][0].(string), Equals, fmt.Sprintf("%d", firstValue+1))
	c.Assert(rs.Rows()[2][0].(string), Equals, fmt.Sprintf("%d", firstValue+2))
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(name) values ('a'),('a'),('a')`)
	rs = tk.MustQuery(`select id from ar order by id`)
	c.Assert(len(rs.Rows()), Equals, 3)
	firstValue, err = strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	c.Assert(rs.Rows()[1][0].(string), Equals, fmt.Sprintf("%d", firstValue+1))
	c.Assert(rs.Rows()[2][0].(string), Equals, fmt.Sprintf("%d", firstValue+2))
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))

	tk.MustExec(`drop table ar`)
}

func (s *testSuite9) TestAutoRandomIDAllowZero(c *C) {
	allowAutoRandom := config.GetGlobalConfig().Experimental.AllowAutoRandom
	if !allowAutoRandom {
		config.GetGlobalConfig().Experimental.AllowAutoRandom = true
		defer func() {
			config.GetGlobalConfig().Experimental.AllowAutoRandom = false
		}()
	}

	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`drop table if exists ar`)
	tk.MustExec(`create table ar (id int key auto_random, name char(10))`)

	rs := tk.MustQuery(`select @@session.sql_mode`)
	sqlMode := rs.Rows()[0][0].(string)
	tk.MustExec(fmt.Sprintf(`set session sql_mode="%s,%s"`, sqlMode, "NO_AUTO_VALUE_ON_ZERO"))

	tk.MustExec(`insert into ar(id) values (0)`)
	rs = tk.MustQuery(`select id from ar`)
	c.Assert(len(rs.Rows()), Equals, 1)
	firstValue, err := strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Equals, 0)
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(id) values (null)`)
	rs = tk.MustQuery(`select id from ar`)
	c.Assert(len(rs.Rows()), Equals, 1)
	firstValue, err = strconv.Atoi(rs.Rows()[0][0].(string))
	c.Assert(err, IsNil)
	c.Assert(firstValue, Greater, 0)
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows(fmt.Sprintf("%d", firstValue)))

	tk.MustExec(`drop table ar`)
}

func (s *testSuite9) TestAutoRandomIDExplicit(c *C) {
	allowAutoRandom := config.GetGlobalConfig().Experimental.AllowAutoRandom
	if !allowAutoRandom {
		config.GetGlobalConfig().Experimental.AllowAutoRandom = true
		defer func() {
			config.GetGlobalConfig().Experimental.AllowAutoRandom = false
		}()
	}

	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec(`use test`)
	tk.MustExec(`drop table if exists ar`)
	tk.MustExec(`create table ar (id int key auto_random, name char(10))`)

	tk.MustExec(`insert into ar(id) values (1)`)
	tk.MustQuery(`select id from ar`).Check(testkit.Rows("1"))
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows("0"))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`insert into ar(id) values (1), (2)`)
	tk.MustQuery(`select id from ar`).Check(testkit.Rows("1", "2"))
	tk.MustQuery(`select last_insert_id()`).Check(testkit.Rows("0"))
	tk.MustExec(`delete from ar`)

	tk.MustExec(`drop table ar`)
}