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executor_test.go
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// Copyright 2022 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 (
"archive/zip"
"context"
"fmt"
"math"
"path/filepath"
"reflect"
"runtime"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/golang/protobuf/proto"
"github.com/pingcap/errors"
"github.com/pingcap/failpoint"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/ddl"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/domain/infosync"
"github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/executor"
"github.com/pingcap/tidb/expression"
"github.com/pingcap/tidb/infoschema"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/meta"
"github.com/pingcap/tidb/meta/autoid"
"github.com/pingcap/tidb/parser"
"github.com/pingcap/tidb/parser/auth"
"github.com/pingcap/tidb/parser/model"
"github.com/pingcap/tidb/parser/mysql"
"github.com/pingcap/tidb/parser/terror"
"github.com/pingcap/tidb/planner"
plannercore "github.com/pingcap/tidb/planner/core"
"github.com/pingcap/tidb/session"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/sessiontxn"
"github.com/pingcap/tidb/statistics"
error2 "github.com/pingcap/tidb/store/driver/error"
"github.com/pingcap/tidb/store/mockstore"
"github.com/pingcap/tidb/table/tables"
"github.com/pingcap/tidb/tablecodec"
"github.com/pingcap/tidb/testkit"
"github.com/pingcap/tidb/testkit/testdata"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util"
"github.com/pingcap/tidb/util/dbterror"
"github.com/pingcap/tidb/util/memory"
"github.com/pingcap/tidb/util/mock"
"github.com/pingcap/tidb/util/replayer"
"github.com/pingcap/tidb/util/rowcodec"
"github.com/pingcap/tidb/util/sqlexec"
"github.com/pingcap/tidb/util/timeutil"
"github.com/pingcap/tipb/go-tipb"
"github.com/stretchr/testify/require"
"github.com/tikv/client-go/v2/oracle"
"github.com/tikv/client-go/v2/testutils"
)
func checkFileName(s string) bool {
files := []string{
"config.toml",
"meta.txt",
"stats/test.t_dump_single.json",
"schema/test.t_dump_single.schema.txt",
"schema/schema_meta.txt",
"table_tiflash_replica.txt",
"variables.toml",
"session_bindings.sql",
"global_bindings.sql",
"sql/sql0.sql",
"explain.txt",
"statsMem/test.t_dump_single.txt",
"sql_meta.toml",
}
for _, f := range files {
if strings.Compare(f, s) == 0 {
return true
}
}
return false
}
func TestPessimisticSelectForUpdate(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t(id int primary key, a int)")
tk.MustExec("insert into t values(1, 1)")
tk.MustExec("begin PESSIMISTIC")
tk.MustQuery("select a from t where id=1 for update").Check(testkit.Rows("1"))
tk.MustExec("update t set a=a+1 where id=1")
tk.MustExec("commit")
tk.MustQuery("select a from t where id=1").Check(testkit.Rows("2"))
}
func TestBind(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists testbind")
tk.MustExec("create table testbind(i int, s varchar(20))")
tk.MustExec("create index index_t on testbind(i,s)")
tk.MustExec("create global binding for select * from testbind using select * from testbind use index for join(index_t)")
require.Len(t, tk.MustQuery("show global bindings").Rows(), 1)
tk.MustExec("create session binding for select * from testbind using select * from testbind use index for join(index_t)")
require.Len(t, tk.MustQuery("show session bindings").Rows(), 1)
tk.MustExec("drop session binding for select * from testbind")
}
func TestChangePumpAndDrainer(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
// change pump or drainer's state need connect to etcd
// so will meet error "URL scheme must be http, https, unix, or unixs: /tmp/tidb"
tk.MustMatchErrMsg("change pump to node_state ='paused' for node_id 'pump1'", "URL scheme must be http, https, unix, or unixs.*")
tk.MustMatchErrMsg("change drainer to node_state ='paused' for node_id 'drainer1'", "URL scheme must be http, https, unix, or unixs.*")
}
func TestLoadStats(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
require.Error(t, tk.ExecToErr("load stats"))
require.Error(t, tk.ExecToErr("load stats ./xxx.json"))
}
func TestPlanReplayer(t *testing.T) {
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/infoschema/mockTiFlashStoreCount", `return(true)`))
defer func() {
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/infoschema/mockTiFlashStoreCount"))
}()
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, index idx_a(a))")
tk.MustExec("alter table t set tiflash replica 1")
tk.MustQuery("plan replayer dump explain select * from t where a=10")
tk.MustQuery("plan replayer dump explain select /*+ read_from_storage(tiflash[t]) */ * from t")
tk.MustExec("create table t1 (a int)")
tk.MustExec("create table t2 (a int)")
tk.MustExec("create definer=`root`@`127.0.0.1` view v1 as select * from t1")
tk.MustExec("create definer=`root`@`127.0.0.1` view v2 as select * from v1")
tk.MustQuery("plan replayer dump explain with tmp as (select a from t1 group by t1.a) select * from tmp, t2 where t2.a=tmp.a;")
tk.MustQuery("plan replayer dump explain select * from t1 where t1.a > (with cte1 as (select 1) select count(1) from cte1);")
tk.MustQuery("plan replayer dump explain select * from v1")
tk.MustQuery("plan replayer dump explain select * from v2")
require.True(t, len(tk.Session().GetSessionVars().LastPlanReplayerToken) > 0)
// clear the status table and assert
tk.MustExec("delete from mysql.plan_replayer_status")
tk.MustQuery("plan replayer dump explain select * from v2")
token := tk.Session().GetSessionVars().LastPlanReplayerToken
rows := tk.MustQuery(fmt.Sprintf("select * from mysql.plan_replayer_status where token = '%v'", token)).Rows()
require.Len(t, rows, 1)
}
func TestPlanReplayerCaptureSEM(t *testing.T) {
originSEM := config.GetGlobalConfig().Security.EnableSEM
defer func() {
config.GetGlobalConfig().Security.EnableSEM = originSEM
}()
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("plan replayer capture '123' '123';")
tk.MustExec("create table t(id int)")
tk.MustQuery("plan replayer dump explain select * from t")
tk.MustQuery("select count(*) from mysql.plan_replayer_status").Check(testkit.Rows("1"))
}
func TestPlanReplayerCapture(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("plan replayer capture '123' '123';")
tk.MustQuery("select sql_digest, plan_digest from mysql.plan_replayer_task;").Check(testkit.Rows("123 123"))
tk.MustGetErrMsg("plan replayer capture '123' '123';", "plan replayer capture task already exists")
tk.MustExec("plan replayer capture remove '123' '123'")
tk.MustQuery("select count(*) from mysql.plan_replayer_task;").Check(testkit.Rows("0"))
tk.MustExec("create table t(id int)")
tk.MustExec("prepare stmt from 'update t set id = ? where id = ? + 1';")
tk.MustExec("SET @number = 5;")
tk.MustExec("execute stmt using @number,@number")
_, sqlDigest := tk.Session().GetSessionVars().StmtCtx.SQLDigest()
_, planDigest := tk.Session().GetSessionVars().StmtCtx.GetPlanDigest()
tk.MustExec("SET @@tidb_enable_plan_replayer_capture = ON;")
tk.MustExec("SET @@global.tidb_enable_historical_stats_for_capture='ON'")
tk.MustExec(fmt.Sprintf("plan replayer capture '%v' '%v'", sqlDigest.String(), planDigest.String()))
err := dom.GetPlanReplayerHandle().CollectPlanReplayerTask()
require.NoError(t, err)
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/domain/shouldDumpStats", "return(true)"))
defer require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/domain/shouldDumpStats"))
tk.MustExec("execute stmt using @number,@number")
task := dom.GetPlanReplayerHandle().DrainTask()
require.NotNil(t, task)
}
func TestPlanReplayerContinuesCapture(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("set @@global.tidb_enable_historical_stats='OFF'")
_, err := tk.Exec("set @@global.tidb_enable_plan_replayer_continuous_capture='ON'")
require.Error(t, err)
require.Equal(t, err.Error(), "tidb_enable_historical_stats should be enabled before enabling tidb_enable_plan_replayer_continuous_capture")
tk.MustExec("set @@global.tidb_enable_historical_stats='ON'")
tk.MustExec("set @@global.tidb_enable_plan_replayer_continuous_capture='ON'")
prHandle := dom.GetPlanReplayerHandle()
tk.MustExec("delete from mysql.plan_replayer_status;")
tk.MustExec("use test")
tk.MustExec("create table t(id int);")
tk.MustExec("set @@tidb_enable_plan_replayer_continuous_capture = 'ON'")
tk.MustQuery("select * from t;")
task := prHandle.DrainTask()
require.NotNil(t, task)
worker := prHandle.GetWorker()
success := worker.HandleTask(task)
require.True(t, success)
tk.MustQuery("select count(*) from mysql.plan_replayer_status").Check(testkit.Rows("1"))
}
func TestShow(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("create database test_show;")
tk.MustExec("use test_show")
tk.MustQuery("show engines")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int primary key)")
require.Len(t, tk.MustQuery("show index in t").Rows(), 1)
require.Len(t, tk.MustQuery("show index from t").Rows(), 1)
require.Len(t, tk.MustQuery("show master status").Rows(), 1)
tk.MustQuery("show create database test_show").Check(testkit.Rows("test_show CREATE DATABASE `test_show` /*!40100 DEFAULT CHARACTER SET utf8mb4 */"))
tk.MustQuery("show privileges").Check(testkit.Rows("Alter Tables To alter the table",
"Alter routine Functions,Procedures To alter or drop stored functions/procedures",
"Config Server Admin To use SHOW CONFIG and SET CONFIG statements",
"Create Databases,Tables,Indexes To create new databases and tables",
"Create routine Databases To use CREATE FUNCTION/PROCEDURE",
"Create role Server Admin To create new roles",
"Create temporary tables Databases To use CREATE TEMPORARY TABLE",
"Create view Tables To create new views",
"Create user Server Admin To create new users",
"Delete Tables To delete existing rows",
"Drop Databases,Tables To drop databases, tables, and views",
"Drop role Server Admin To drop roles",
"Event Server Admin To create, alter, drop and execute events",
"Execute Functions,Procedures To execute stored routines",
"File File access on server To read and write files on the server",
"Grant option Databases,Tables,Functions,Procedures To give to other users those privileges you possess",
"Index Tables To create or drop indexes",
"Insert Tables To insert data into tables",
"Lock tables Databases To use LOCK TABLES (together with SELECT privilege)",
"Process Server Admin To view the plain text of currently executing queries",
"Proxy Server Admin To make proxy user possible",
"References Databases,Tables To have references on tables",
"Reload Server Admin To reload or refresh tables, logs and privileges",
"Replication client Server Admin To ask where the slave or master servers are",
"Replication slave Server Admin To read binary log events from the master",
"Select Tables To retrieve rows from table",
"Show databases Server Admin To see all databases with SHOW DATABASES",
"Show view Tables To see views with SHOW CREATE VIEW",
"Shutdown Server Admin To shut down the server",
"Super Server Admin To use KILL thread, SET GLOBAL, CHANGE MASTER, etc.",
"Trigger Tables To use triggers",
"Create tablespace Server Admin To create/alter/drop tablespaces",
"Update Tables To update existing rows",
"Usage Server Admin No privileges - allow connect only",
"BACKUP_ADMIN Server Admin ",
"RESTORE_ADMIN Server Admin ",
"SYSTEM_USER Server Admin ",
"SYSTEM_VARIABLES_ADMIN Server Admin ",
"ROLE_ADMIN Server Admin ",
"CONNECTION_ADMIN Server Admin ",
"PLACEMENT_ADMIN Server Admin ",
"DASHBOARD_CLIENT Server Admin ",
"RESTRICTED_TABLES_ADMIN Server Admin ",
"RESTRICTED_STATUS_ADMIN Server Admin ",
"RESTRICTED_VARIABLES_ADMIN Server Admin ",
"RESTRICTED_USER_ADMIN Server Admin ",
"RESTRICTED_CONNECTION_ADMIN Server Admin ",
"RESTRICTED_REPLICA_WRITER_ADMIN Server Admin ",
"RESOURCE_GROUP_ADMIN Server Admin ",
))
require.Len(t, tk.MustQuery("show table status").Rows(), 1)
}
func TestSelectWithoutFrom(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustQuery("select 1 + 2*3;").Check(testkit.Rows("7"))
tk.MustQuery(`select _utf8"string";`).Check(testkit.Rows("string"))
tk.MustQuery("select 1 order by 1;").Check(testkit.Rows("1"))
tk.MustQuery("SELECT 'a' as f1 having f1 = 'a';").Check(testkit.Rows("a"))
tk.MustQuery("SELECT (SELECT * FROM (SELECT 'a') t) AS f1 HAVING (f1 = 'a' OR TRUE);").Check(testkit.Rows("a"))
tk.MustQuery("SELECT (SELECT * FROM (SELECT 'a') t) + 1 AS f1 HAVING (f1 = 'a' OR TRUE)").Check(testkit.Rows("1"))
}
// TestSelectBackslashN Issue 3685.
func TestSelectBackslashN(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select \N;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "NULL", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "\N";`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
tk.MustExec("use test;")
tk.MustExec("create table test (`\\N` int);")
tk.MustExec("insert into test values (1);")
tk.CheckExecResult(1, 0)
sql = "select * from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select \N from test;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.NoError(t, err)
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (\N) from test;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select `\\N` from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select (`\\N`) from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select '\N' from test;`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select ('\N') from test;`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
// TestSelectNull Issue #4053.
func TestSelectNull(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select nUll;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (null);`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select null+NULL;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.NoError(t, err)
require.Len(t, fields, 1)
require.Equal(t, `null+NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
// TestSelectStringLiteral Issue #3686.
func TestSelectStringLiteral(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select 'abc';`
tk.MustQuery(sql).Check(testkit.Rows("abc"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `abc`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (('abc'));`
tk.MustQuery(sql).Check(testkit.Rows("abc"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `abc`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'abc'+'def';`
tk.MustQuery(sql).Check(testkit.Rows("0"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `'abc'+'def'`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Below checks whether leading invalid chars are trimmed.
sql = "select '\n';"
tk.MustQuery(sql).Check(testkit.Rows("\n"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\t col';" // Lowercased letter is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\t Col';" // Uppercased letter is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "Col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\n\t 中文 col';" // Chinese char is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "中文 col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select ' \r\n .col';" // Punctuation is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, ".col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select ' 😆col';" // Emoji is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "😆col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Below checks whether trailing invalid chars are preserved.
sql = `select 'abc ';`
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "abc ", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select ' abc 123 ';`
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "abc 123 ", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Issue #4239.
sql = `select 'a' ' ' 'string';`
tk.MustQuery(sql).Check(testkit.Rows("a string"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "a", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'a' " " "string";`
tk.MustQuery(sql).Check(testkit.Rows("a string"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "a", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'string' 'string';`
tk.MustQuery(sql).Check(testkit.Rows("stringstring"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "string", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a";`
tk.MustQuery(sql).Check(testkit.Rows("ssa"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" "b";`
tk.MustQuery(sql).Check(testkit.Rows("ssab"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" ' ' "b";`
tk.MustQuery(sql).Check(testkit.Rows("ssa b"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" ' ' "b" ' ' "d";`
tk.MustQuery(sql).Check(testkit.Rows("ssa b d"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
func TestSelectLimit(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table select_limit(id int not null default 1, name varchar(255), PRIMARY KEY(id));")
// insert data
tk.MustExec("insert INTO select_limit VALUES (1, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert into select_limit values (2, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert INTO select_limit VALUES (3, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert INTO select_limit VALUES (4, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustQuery("select * from select_limit limit 1;").Check(testkit.Rows("1 hello"))
tk.MustQuery("select id from (select * from select_limit limit 1) k where id != 1;").Check(testkit.Rows())
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 0;").Check(testkit.Rows("1 hello", "2 hello", "3 hello", "4 hello"))
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 1;").Check(testkit.Rows("2 hello", "3 hello", "4 hello"))
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 3;").Check(testkit.Rows("4 hello"))
err := tk.ExecToErr("select * from select_limit limit 18446744073709551616 offset 3;")
require.Error(t, err)
}
func TestSelectOrderBy(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table select_order_test(id int not null default 1, name varchar(255), PRIMARY KEY(id));")
// insert data
tk.MustExec("insert INTO select_order_test VALUES (1, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert into select_order_test values (2, \"hello\");")
tk.CheckExecResult(1, 0)
// Test star field
tk.MustQuery("select * from select_order_test where id = 1 order by id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
tk.MustQuery("select id from select_order_test order by id desc limit 1 ").Check(testkit.Rows("2"))
tk.MustQuery("select id from select_order_test order by id + 1 desc limit 1 ").Check(testkit.Rows("2"))
// Test limit
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit
tk.MustQuery("select id as c1, name from select_order_test order by 2, id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit overflow
tk.MustQuery("select * from select_order_test order by name, id limit 100 offset 0;").Check(testkit.Rows("1 hello", "2 hello"))
// Test offset overflow
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 100;").Check(testkit.Rows())
// Test limit exceeds int range.
tk.MustQuery("select id from select_order_test order by name, id limit 18446744073709551615;").Check(testkit.Rows("1", "2"))
// Test multiple field
tk.MustQuery("select id, name from select_order_test where id = 1 group by id, name limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit + order by
for i := 3; i <= 10; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"zz\");", i))
}
tk.MustExec("insert INTO select_order_test VALUES (10086, \"hi\");")
for i := 11; i <= 20; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"hh\");", i))
}
for i := 21; i <= 30; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"zz\");", i))
}
tk.MustExec("insert INTO select_order_test VALUES (1501, \"aa\");")
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 3;").Check(testkit.Rows("11 hh"))
tk.MustExec("drop table select_order_test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (c int, d int)")
tk.MustExec("insert t values (1, 1)")
tk.MustExec("insert t values (1, 2)")
tk.MustExec("insert t values (1, 3)")
tk.MustQuery("select 1-d as d from t order by d;").Check(testkit.Rows("-2", "-1", "0"))
tk.MustQuery("select 1-d as d from t order by d + 1;").Check(testkit.Rows("0", "-1", "-2"))
tk.MustQuery("select t.d from t order by d;").Check(testkit.Rows("1", "2", "3"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int, b int, c int)")
tk.MustExec("insert t values (1, 2, 3)")
tk.MustQuery("select b from (select a,b from t order by a,c) t").Check(testkit.Rows("2"))
tk.MustQuery("select b from (select a,b from t order by a,c limit 1) t").Check(testkit.Rows("2"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, index idx(a))")
tk.MustExec("insert into t values(1, 1), (2, 2)")
tk.MustQuery("select * from t where 1 order by b").Check(testkit.Rows("1 1", "2 2"))
tk.MustQuery("select * from t where a between 1 and 2 order by a desc").Check(testkit.Rows("2 2", "1 1"))
// Test double read and topN is pushed down to first read plannercore.
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int primary key, b int, c int, index idx(b))")
tk.MustExec("insert into t values(1, 3, 1)")
tk.MustExec("insert into t values(2, 2, 2)")
tk.MustExec("insert into t values(3, 1, 3)")
tk.MustQuery("select * from t use index(idx) order by a desc limit 1").Check(testkit.Rows("3 1 3"))
// Test double read which needs to keep order.
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, key b (b))")
tk.Session().GetSessionVars().IndexLookupSize = 3
for i := 0; i < 10; i++ {
tk.MustExec(fmt.Sprintf("insert into t values(%d, %d)", i, 10-i))
}
tk.MustQuery("select a from t use index(b) order by b").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1", "0"))
}
func TestOrderBy(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t (c1 int, c2 int, c3 varchar(20))")
tk.MustExec("insert into t values (1, 2, 'abc'), (2, 1, 'bcd')")
// Fix issue https://github.com/pingcap/tidb/issues/337
tk.MustQuery("select c1 as a, c1 as b from t order by c1").Check(testkit.Rows("1 1", "2 2"))
tk.MustQuery("select c1 as a, t.c1 as a from t order by a desc").Check(testkit.Rows("2 2", "1 1"))
tk.MustQuery("select c1 as c2 from t order by c2").Check(testkit.Rows("1", "2"))
tk.MustQuery("select sum(c1) from t order by sum(c1)").Check(testkit.Rows("3"))
tk.MustQuery("select c1 as c2 from t order by c2 + 1").Check(testkit.Rows("2", "1"))
// Order by position.
tk.MustQuery("select * from t order by 1").Check(testkit.Rows("1 2 abc", "2 1 bcd"))
tk.MustQuery("select * from t order by 2").Check(testkit.Rows("2 1 bcd", "1 2 abc"))
// Order by binary.
tk.MustQuery("select c1, c3 from t order by binary c1 desc").Check(testkit.Rows("2 bcd", "1 abc"))
tk.MustQuery("select c1, c2 from t order by binary c3").Check(testkit.Rows("1 2", "2 1"))
}
func TestSelectErrorRow(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
require.Error(t, tk.ExecToErr("select row(1, 1) from test"))
require.Error(t, tk.ExecToErr("select * from test group by row(1, 1);"))
require.Error(t, tk.ExecToErr("select * from test order by row(1, 1);"))
require.Error(t, tk.ExecToErr("select * from test having row(1, 1);"))
require.Error(t, tk.ExecToErr("select (select 1, 1) from test;"))
require.Error(t, tk.ExecToErr("select * from test group by (select 1, 1);"))
require.Error(t, tk.ExecToErr("select * from test order by (select 1, 1);"))
require.Error(t, tk.ExecToErr("select * from test having (select 1, 1);"))
}
func TestNeighbouringProj(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t1(a int, b int)")
tk.MustExec("create table t2(a int, b int)")
tk.MustExec("insert into t1 value(1, 1), (2, 2)")
tk.MustExec("insert into t2 value(1, 1), (2, 2)")
tk.MustQuery("select sum(c) from (select t1.a as a, t1.a as c, length(t1.b) from t1 union select a, b, b from t2) t;").Check(testkit.Rows("5"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a bigint, b bigint, c bigint);")
tk.MustExec("insert into t values(1, 1, 1), (2, 2, 2), (3, 3, 3);")
tk.MustQuery("select cast(count(a) as signed), a as another, a from t group by a order by cast(count(a) as signed), a limit 10;").Check(testkit.Rows("1 1 1", "1 2 2", "1 3 3"))
}
func TestIn(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec(`drop table if exists t`)
tk.MustExec(`create table t (c1 int primary key, c2 int, key c (c2));`)
for i := 0; i <= 200; i++ {
tk.MustExec(fmt.Sprintf("insert t values(%d, %d)", i, i))
}
queryStr := `select c2 from t where c1 in ('7', '10', '112', '111', '98', '106', '100', '9', '18', '17') order by c2`
tk.MustQuery(queryStr).Check(testkit.Rows("7", "9", "10", "17", "18", "98", "100", "106", "111", "112"))
queryStr = `select c2 from t where c1 in ('7a')`
tk.MustQuery(queryStr).Check(testkit.Rows("7"))
}
func TestTablePKisHandleScan(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int PRIMARY KEY AUTO_INCREMENT)")
tk.MustExec("insert t values (),()")
tk.MustExec("insert t values (-100),(0)")
tests := []struct {
sql string
result [][]interface{}
}{
{
"select * from t",
testkit.Rows("-100", "1", "2", "3"),
},
{
"select * from t where a = 1",
testkit.Rows("1"),
},
{
"select * from t where a != 1",
testkit.Rows("-100", "2", "3"),
},
{
"select * from t where a >= '1.1'",
testkit.Rows("2", "3"),
},
{
"select * from t where a < '1.1'",
testkit.Rows("-100", "1"),
},
{
"select * from t where a > '-100.1' and a < 2",
testkit.Rows("-100", "1"),
},
{
"select * from t where a is null",
testkit.Rows(),
}, {
"select * from t where a is true",
testkit.Rows("-100", "1", "2", "3"),
}, {
"select * from t where a is false",
testkit.Rows(),
},
{
"select * from t where a in (1, 2)",
testkit.Rows("1", "2"),
},
{
"select * from t where a between 1 and 2",
testkit.Rows("1", "2"),
},
}
for _, tt := range tests {
tk.MustQuery(tt.sql).Check(tt.result)
}
}
func TestIndexReverseOrder(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int, index idx (b))")
tk.MustExec("insert t (b) values (0), (1), (2), (3), (4), (5), (6), (7), (8), (9)")
tk.MustQuery("select b from t order by b desc").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1", "0"))
tk.MustQuery("select b from t where b <3 or (b >=6 and b < 8) order by b desc").Check(testkit.Rows("7", "6", "2", "1", "0"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int, b int, index idx (b, a))")
tk.MustExec("insert t values (0, 2), (1, 2), (2, 2), (0, 1), (1, 1), (2, 1), (0, 0), (1, 0), (2, 0)")
tk.MustQuery("select b, a from t order by b, a desc").Check(testkit.Rows("0 2", "0 1", "0 0", "1 2", "1 1", "1 0", "2 2", "2 1", "2 0"))
}
func TestTableReverseOrder(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int)")
tk.MustExec("insert t (b) values (1), (2), (3), (4), (5), (6), (7), (8), (9)")
tk.MustQuery("select b from t order by a desc").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1"))
tk.MustQuery("select a from t where a <3 or (a >=6 and a < 8) order by a desc").Check(testkit.Rows("7", "6", "2", "1"))
}
func TestDefaultNull(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int default 1, c int)")
tk.MustExec("insert t values ()")
tk.MustQuery("select * from t").Check(testkit.Rows("1 1 <nil>"))
tk.MustExec("update t set b = NULL where a = 1")
tk.MustQuery("select * from t").Check(testkit.Rows("1 <nil> <nil>"))
tk.MustExec("update t set c = 1")
tk.MustQuery("select * from t ").Check(testkit.Rows("1 <nil> 1"))
tk.MustExec("delete from t where a = 1")
tk.MustExec("insert t (a) values (1)")
tk.MustQuery("select * from t").Check(testkit.Rows("1 1 <nil>"))
}
func TestUnsignedPKColumn(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int unsigned primary key, b int, c int, key idx_ba (b, c, a));")
tk.MustExec("insert t values (1, 1, 1)")
tk.MustQuery("select * from t;").Check(testkit.Rows("1 1 1"))
tk.MustExec("update t set c=2 where a=1;")
tk.MustQuery("select * from t where b=1;").Check(testkit.Rows("1 1 2"))
}
func TestJSON(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists test_json")
tk.MustExec("create table test_json (id int, a json)")
tk.MustExec(`insert into test_json (id, a) values (1, '{"a":[1,"2",{"aa":"bb"},4],"b":true}')`)
tk.MustExec(`insert into test_json (id, a) values (2, "null")`)
tk.MustExec(`insert into test_json (id, a) values (3, null)`)
tk.MustExec(`insert into test_json (id, a) values (4, 'true')`)
tk.MustExec(`insert into test_json (id, a) values (5, '3')`)
tk.MustExec(`insert into test_json (id, a) values (5, '4.0')`)
tk.MustExec(`insert into test_json (id, a) values (6, '"string"')`)
tk.MustQuery(`select tj.a from test_json tj order by tj.id`).Check(testkit.Rows(`{"a": [1, "2", {"aa": "bb"}, 4], "b": true}`, "null", "<nil>", "true", "3", "4", `"string"`))
// Check json_type function
tk.MustQuery(`select json_type(a) from test_json tj order by tj.id`).Check(testkit.Rows("OBJECT", "NULL", "<nil>", "BOOLEAN", "INTEGER", "DOUBLE", "STRING"))
// Check json compare with primitives.
tk.MustQuery(`select a from test_json tj where a = 3`).Check(testkit.Rows("3"))
tk.MustQuery(`select a from test_json tj where a = 4.0`).Check(testkit.Rows("4"))
tk.MustQuery(`select a from test_json tj where a = true`).Check(testkit.Rows("true"))
tk.MustQuery(`select a from test_json tj where a = "string"`).Check(testkit.Rows(`"string"`))
// Check cast(true/false as JSON).
tk.MustQuery(`select cast(true as JSON)`).Check(testkit.Rows(`true`))
tk.MustQuery(`select cast(false as JSON)`).Check(testkit.Rows(`false`))
// Check two json grammar sugar.
tk.MustQuery(`select a->>'$.a[2].aa' as x, a->'$.b' as y from test_json having x is not null order by id`).Check(testkit.Rows(`bb true`))
tk.MustQuery(`select a->'$.a[2].aa' as x, a->>'$.b' as y from test_json having x is not null order by id`).Check(testkit.Rows(`"bb" true`))
// Check some DDL limits for TEXT/BLOB/JSON column.
tk.MustGetErrCode(`create table test_bad_json(a json default '{}')`, mysql.ErrBlobCantHaveDefault)
tk.MustGetErrCode(`create table test_bad_json(a blob default 'hello')`, mysql.ErrBlobCantHaveDefault)
tk.MustGetErrCode(`create table test_bad_json(a text default 'world')`, mysql.ErrBlobCantHaveDefault)
// check json fields cannot be used as key.
tk.MustGetErrCode(`create table test_bad_json(id int, a json, key (a))`, mysql.ErrJSONUsedAsKey)
// check CAST AS JSON.
tk.MustQuery(`select CAST('3' AS JSON), CAST('{}' AS JSON), CAST(null AS JSON)`).Check(testkit.Rows(`3 {} <nil>`))
//nolint:revive,all_revive
tk.MustQuery("select a, count(1) from test_json group by a order by a").Check(testkit.Rows(
"<nil> 1",
"null 1",
"3 1",
"4 1",
`"string" 1`,
"{\"a\": [1, \"2\", {\"aa\": \"bb\"}, 4], \"b\": true} 1",
"true 1"))
// Check cast json to decimal.
// NOTE: this test case contains a bug, it should be uncommented after the bug is fixed.
// TODO: Fix bug https://github.com/pingcap/tidb/issues/12178
// tk.MustExec("drop table if exists test_json")
// tk.MustExec("create table test_json ( a decimal(60,2) as (JSON_EXTRACT(b,'$.c')), b json );")
// tk.MustExec(`insert into test_json (b) values
// ('{"c": "1267.1"}'),
// ('{"c": "1267.01"}'),
// ('{"c": "1267.1234"}'),
// ('{"c": "1267.3456"}'),
// ('{"c": "1234567890123456789012345678901234567890123456789012345"}'),
// ('{"c": "1234567890123456789012345678901234567890123456789012345.12345"}');`)
//
// tk.MustQuery("select a from test_json;").Check(testkit.Rows("1267.10", "1267.01", "1267.12",
// "1267.35", "1234567890123456789012345678901234567890123456789012345.00",
// "1234567890123456789012345678901234567890123456789012345.12"))
}
func TestMultiUpdate(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec(`CREATE TABLE test_mu (a int primary key, b int, c int)`)
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9)`)
// Test INSERT ... ON DUPLICATE UPDATE set_lists.
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3) ON DUPLICATE KEY UPDATE b = 3, c = b`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 3 3`, `4 5 6`, `7 8 9`))
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3) ON DUPLICATE KEY UPDATE c = 2, b = c+5`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 7 2`, `4 5 6`, `7 8 9`))