stmtctx: move time zone info in stmtctx.StatementContext into TypeCtx

bindinfo/session_handle.go

@@ -62,7 +62,7 @@ func (h *SessionHandle) CreateBindRecord(sctx sessionctx.Context, record *BindRe
 		return err
 	}
 	record.Db = strings.ToLower(record.Db)
-	now := types.NewTime(types.FromGoTime(time.Now().In(sctx.GetSessionVars().StmtCtx.TimeZone)), mysql.TypeTimestamp, 3)
+	now := types.NewTime(types.FromGoTime(time.Now().In(sctx.GetSessionVars().StmtCtx.TimeZone())), mysql.TypeTimestamp, 3)
 	for i := range record.Bindings {
 		record.Bindings[i].CreateTime = now
 		record.Bindings[i].UpdateTime = now

br/pkg/lightning/backend/kv/session.go

@@ -311,7 +311,7 @@ func NewSession(options *encode.SessionOptions, logger log.Logger) *Session {
 			}
 		}
 	}
-	vars.StmtCtx.TimeZone = vars.Location()
+	vars.StmtCtx.SetTimeZone(vars.Location())
 	if err := vars.SetSystemVar("timestamp", strconv.FormatInt(options.Timestamp, 10)); err != nil {
 		logger.Warn("new session: failed to set timestamp",
 			log.ShortError(err))

br/pkg/lightning/backend/local/local_test.go

@@ -108,7 +108,7 @@ func TestNextKey(t *testing.T) {
 		{types.NewStringDatum("test\255"), types.NewStringDatum("test\255\000")},
 	}
 
-	stmtCtx := new(stmtctx.StatementContext)
+	stmtCtx := stmtctx.NewStmtCtx()
 	for _, datums := range testDatums {
 		keyBytes, err := codec.EncodeKey(stmtCtx, nil, types.NewIntDatum(123), datums[0])
 		require.NoError(t, err)

br/pkg/lightning/backend/local/localhelper_test.go

@@ -783,7 +783,7 @@ func doTestBatchSplitByRangesWithClusteredIndex(t *testing.T, hook clientHook) {
 		splitRegionBaseBackOffTime = oldSplitBackoffTime
 	}()
 
-	stmtCtx := new(stmtctx.StatementContext)
+	stmtCtx := stmtctx.NewStmtCtx()
 
 	tableID := int64(1)
 	tableStartKey := tablecodec.EncodeTablePrefix(tableID)

br/pkg/restore/merge_test.go

@@ -46,7 +46,7 @@ func (fb *fileBulder) build(tableID, indexID, num, bytes, kv int) (files []*back
 	if indexID != 0 {
 		lowVal := types.NewIntDatum(fb.startKeyOffset - 10)
 		highVal := types.NewIntDatum(fb.startKeyOffset)
-		sc := &stmtctx.StatementContext{TimeZone: time.UTC}
+		sc := stmtctx.NewStmtCtxWithTimeZone(time.UTC)
 		lowValue, err := codec.EncodeKey(sc, nil, lowVal)
 		if err != nil {
 			panic(err)

br/pkg/task/backup.go

@@ -767,9 +767,7 @@ func ParseTSString(ts string, tzCheck bool) (uint64, error) {
 	}
 
 	loc := time.Local
-	sc := &stmtctx.StatementContext{
-		TimeZone: loc,
-	}
+	sc := stmtctx.NewStmtCtxWithTimeZone(loc)
 	if tzCheck {
 		tzIdx, _, _, _, _ := types.GetTimezone(ts)
 		if tzIdx < 0 {

ddl/backfilling_scheduler.go

@@ -149,9 +149,9 @@ func initSessCtx(
 	tzLocation *model.TimeZoneLocation,
 ) error {
 	// Unify the TimeZone settings in newContext.
-	if sessCtx.GetSessionVars().StmtCtx.TimeZone == nil {
+	if sessCtx.GetSessionVars().StmtCtx.TimeZone() == nil {
 		tz := *time.UTC
-		sessCtx.GetSessionVars().StmtCtx.TimeZone = &tz
+		sessCtx.GetSessionVars().StmtCtx.SetTimeZone(&tz)
 	}
 	sessCtx.GetSessionVars().StmtCtx.IsDDLJobInQueue = true
 	// Set the row encode format version.

ddl/column.go

@@ -1314,7 +1314,7 @@ func (w *updateColumnWorker) fetchRowColVals(txn kv.Transaction, taskRange reorg
 }
 
 func (w *updateColumnWorker) getRowRecord(handle kv.Handle, recordKey []byte, rawRow []byte) error {
-	sysTZ := w.sessCtx.GetSessionVars().StmtCtx.TimeZone
+	sysTZ := w.sessCtx.GetSessionVars().StmtCtx.TimeZone()
 	_, err := w.rowDecoder.DecodeTheExistedColumnMap(w.sessCtx, handle, rawRow, sysTZ, w.rowMap)
 	if err != nil {
 		return errors.Trace(dbterror.ErrCantDecodeRecord.GenWithStackByArgs("column", err))

ddl/export_test.go

@@ -63,6 +63,6 @@ func ConvertRowToHandleAndIndexDatum(
 	c := copCtx.GetBase()
 	idxData := extractDatumByOffsets(row, copCtx.IndexColumnOutputOffsets(idxID), c.ExprColumnInfos, nil)
 	handleData := extractDatumByOffsets(row, c.HandleOutputOffsets, c.ExprColumnInfos, nil)
-	handle, err := buildHandle(handleData, c.TableInfo, c.PrimaryKeyInfo, &stmtctx.StatementContext{TimeZone: time.Local})
+	handle, err := buildHandle(handleData, c.TableInfo, c.PrimaryKeyInfo, stmtctx.NewStmtCtxWithTimeZone(time.Local))
 	return handle, idxData, err
 }

ddl/index.go

@@ -1494,7 +1494,7 @@ func (w *baseIndexWorker) getNextKey(taskRange reorgBackfillTask, taskDone bool)
 }
 
 func (w *baseIndexWorker) updateRowDecoder(handle kv.Handle, rawRecord []byte) error {
-	sysZone := w.sessCtx.GetSessionVars().StmtCtx.TimeZone
+	sysZone := w.sessCtx.GetSessionVars().StmtCtx.TimeZone()
 	_, err := w.rowDecoder.DecodeAndEvalRowWithMap(w.sessCtx, handle, rawRecord, sysZone, w.rowMap)
 	return errors.Trace(err)
 }

ddl/partition.go

@@ -3181,7 +3181,7 @@ func (w *reorgPartitionWorker) fetchRowColVals(txn kv.Transaction, taskRange reo
 
 	// taskDone means that the added handle is out of taskRange.endHandle.
 	taskDone := false
-	sysTZ := w.sessCtx.GetSessionVars().StmtCtx.TimeZone
+	sysTZ := w.sessCtx.GetSessionVars().StmtCtx.TimeZone()
 
 	tmpRow := make([]types.Datum, w.maxOffset+1)
 	var lastAccessedHandle kv.Key

ddl/reorg.go

@@ -82,7 +82,7 @@ func newContext(store kv.Storage) sessionctx.Context {
 
 	tz := *time.UTC
 	c.GetSessionVars().TimeZone = &tz
-	c.GetSessionVars().StmtCtx.TimeZone = &tz
+	c.GetSessionVars().StmtCtx.SetTimeZone(&tz)
 	return c
 }
 

distsql/distsql_test.go

@@ -300,10 +300,10 @@ func (r *mockResultSubset) RespTime() time.Duration { return 0 }
 
 func newMockSessionContext() sessionctx.Context {
 	ctx := mock.NewContext()
-	ctx.GetSessionVars().StmtCtx = &stmtctx.StatementContext{
-		MemTracker:  memory.NewTracker(-1, -1),
-		DiskTracker: disk.NewTracker(-1, -1),
-	}
+	ctx.GetSessionVars().StmtCtx = stmtctx.NewStmtCtx()
+	ctx.GetSessionVars().StmtCtx.MemTracker = memory.NewTracker(-1, -1)
+	ctx.GetSessionVars().StmtCtx.DiskTracker = disk.NewTracker(-1, -1)
+
 	ctx.Store = &mock.Store{
 		Client: &mock.Client{
 			MockResponse: &mockResponse{

distsql/request_builder_test.go

@@ -189,7 +189,7 @@ func TestIndexRangesToKVRanges(t *testing.T) {
 		},
 	}
 
-	actual, err := IndexRangesToKVRanges(new(stmtctx.StatementContext), 12, 15, ranges)
+	actual, err := IndexRangesToKVRanges(stmtctx.NewStmtCtx(), 12, 15, ranges)
 	require.NoError(t, err)
 	for i := range actual.FirstPartitionRange() {
 		require.Equal(t, expect[i], actual.FirstPartitionRange()[i])
@@ -314,7 +314,7 @@ func TestRequestBuilder2(t *testing.T) {
 		},
 	}
 
-	actual, err := (&RequestBuilder{}).SetIndexRanges(new(stmtctx.StatementContext), 12, 15, ranges).
+	actual, err := (&RequestBuilder{}).SetIndexRanges(stmtctx.NewStmtCtx(), 12, 15, ranges).
 		SetDAGRequest(&tipb.DAGRequest{}).
 		SetDesc(false).
 		SetKeepOrder(false).
@@ -659,7 +659,7 @@ func TestIndexRangesToKVRangesWithFbs(t *testing.T) {
 			Collators: collate.GetBinaryCollatorSlice(1),
 		},
 	}
-	actual, err := IndexRangesToKVRanges(new(stmtctx.StatementContext), 0, 0, ranges)
+	actual, err := IndexRangesToKVRanges(stmtctx.NewStmtCtx(), 0, 0, ranges)
 	require.NoError(t, err)
 	expect := []kv.KeyRange{
 		{

distsql/select_result_test.go

@@ -29,7 +29,7 @@ import (
 
 func TestUpdateCopRuntimeStats(t *testing.T) {
 	ctx := mock.NewContext()
-	ctx.GetSessionVars().StmtCtx = new(stmtctx.StatementContext)
+	ctx.GetSessionVars().StmtCtx = stmtctx.NewStmtCtx()
 	sr := selectResult{ctx: ctx, storeType: kv.TiKV}
 	require.Nil(t, ctx.GetSessionVars().StmtCtx.RuntimeStatsColl)
 

domain/domain_test.go

@@ -196,7 +196,7 @@ func TestStatWorkRecoverFromPanic(t *testing.T) {
 	require.Equal(t, expiredTimeStamp, ts)
 
 	// set expiredTimeStamp4PC to "2023-08-02 12:15:00"
-	ts, _ = types.ParseTimestamp(&stmtctx.StatementContext{TimeZone: time.UTC}, "2023-08-02 12:15:00")
+	ts, _ = types.ParseTimestamp(stmtctx.NewStmtCtxWithTimeZone(time.UTC), "2023-08-02 12:15:00")
 	dom.SetExpiredTimeStamp4PC(ts)
 	expiredTimeStamp = dom.ExpiredTimeStamp4PC()
 	require.Equal(t, expiredTimeStamp, ts)

executor/aggfuncs/func_count_test.go

@@ -158,7 +158,7 @@ func TestMemCount(t *testing.T) {
 }
 
 func TestWriteTime(t *testing.T) {
-	tt, err := types.ParseDate(&(stmtctx.StatementContext{}), "2020-11-11")
+	tt, err := types.ParseDate(stmtctx.NewStmtCtx(), "2020-11-11")
 	require.NoError(t, err)
 
 	buf := make([]byte, 16)

executor/analyze_col_v2.go

@@ -350,7 +350,7 @@ func (e *AnalyzeColumnsExecV2) buildSamplingStats(
 		// If there's no virtual column or we meet error during eval virtual column, we fallback to normal decode otherwise.
 		for _, sample := range rootRowCollector.Base().Samples {
 			for i := range sample.Columns {
-				sample.Columns[i], err = tablecodec.DecodeColumnValue(sample.Columns[i].GetBytes(), &e.colsInfo[i].FieldType, sc.TimeZone)
+				sample.Columns[i], err = tablecodec.DecodeColumnValue(sample.Columns[i].GetBytes(), &e.colsInfo[i].FieldType, sc.TimeZone())
 				if err != nil {
 					return 0, nil, nil, nil, nil, err
 				}

executor/brie.go

@@ -235,12 +235,12 @@ func (bq *brieQueue) clearTask(sc *stmtctx.StatementContext) {
 }
 
 func (b *executorBuilder) parseTSString(ts string) (uint64, error) {
-	sc := &stmtctx.StatementContext{TimeZone: b.ctx.GetSessionVars().Location()}
+	sc := stmtctx.NewStmtCtxWithTimeZone(b.ctx.GetSessionVars().Location())
 	t, err := types.ParseTime(sc, ts, mysql.TypeTimestamp, types.MaxFsp, nil)
 	if err != nil {
 		return 0, err
 	}
-	t1, err := t.GoTime(sc.TimeZone)
+	t1, err := t.GoTime(sc.TimeZone())
 	if err != nil {
 		return 0, err
 	}

executor/coprocessor.go

@@ -183,11 +183,13 @@ func (h *CoprocessorDAGHandler) buildDAGExecutor(req *coprocessor.Request) (exec
 
 	stmtCtx := h.sctx.GetSessionVars().StmtCtx
 	stmtCtx.SetFlagsFromPBFlag(dagReq.Flags)
-	stmtCtx.TimeZone, err = timeutil.ConstructTimeZone(dagReq.TimeZoneName, int(dagReq.TimeZoneOffset))
-	h.sctx.GetSessionVars().TimeZone = stmtCtx.TimeZone
+	tz, err := timeutil.ConstructTimeZone(dagReq.TimeZoneName, int(dagReq.TimeZoneOffset))
 	if err != nil {
 		return nil, errors.Trace(err)
 	}
+
+	stmtCtx.SetTimeZone(tz)
+	h.sctx.GetSessionVars().TimeZone = tz
 	h.dagReq = dagReq
 	is := h.sctx.GetInfoSchema().(infoschema.InfoSchema)
 	// Build physical plan.

executor/executor.go

@@ -1938,12 +1938,11 @@ func ResetContextOfStmt(ctx sessionctx.Context, s ast.StmtNode) (err error) {
 	if vars.TxnCtx.CouldRetry || mysql.HasCursorExistsFlag(vars.Status) {
 		// Must construct new statement context object, the retry history need context for every statement.
 		// TODO: Maybe one day we can get rid of transaction retry, then this logic can be deleted.
-		sc = &stmtctx.StatementContext{}
+		sc = stmtctx.NewStmtCtx()
 	} else {
 		sc = vars.InitStatementContext()
 	}
-	var typeConvFlags types.Flags
-	sc.TimeZone = vars.Location()
+	sc.SetTimeZone(vars.Location())
 	sc.TaskID = stmtctx.AllocateTaskID()
 	sc.CTEStorageMap = map[int]*CTEStorages{}
 	sc.IsStaleness = false
@@ -2139,10 +2138,12 @@ func ResetContextOfStmt(ctx sessionctx.Context, s ast.StmtNode) (err error) {
 		sc.AllowInvalidDate = vars.SQLMode.HasAllowInvalidDatesMode()
 	}
 
-	typeConvFlags = typeConvFlags.
-		WithSkipUTF8Check(vars.SkipUTF8Check).
-		WithSkipSACIICheck(vars.SkipASCIICheck).
-		WithSkipUTF8MB4Check(!globalConfig.Instance.CheckMb4ValueInUTF8.Load())
+	sc.UpdateTypeFlags(func(flags types.Flags) types.Flags {
+		return flags.
+			WithSkipUTF8Check(vars.SkipUTF8Check).
+			WithSkipSACIICheck(vars.SkipASCIICheck).
+			WithSkipUTF8MB4Check(!globalConfig.Instance.CheckMb4ValueInUTF8.Load())
+	})
 
 	vars.PlanCacheParams.Reset()
 	if priority := mysql.PriorityEnum(atomic.LoadInt32(&variable.ForcePriority)); priority != mysql.NoPriority {
@@ -2169,7 +2170,6 @@ func ResetContextOfStmt(ctx sessionctx.Context, s ast.StmtNode) (err error) {
 		sc.RuntimeStatsColl = execdetails.NewRuntimeStatsColl(reuseObj)
 	}
 
-	sc.TypeConvContext = types.NewContext(typeConvFlags, sc.TimeZone, sc.AppendWarning)
 	sc.TblInfo2UnionScan = make(map[*model.TableInfo]bool)
 	errCount, warnCount := vars.StmtCtx.NumErrorWarnings()
 	vars.SysErrorCount = errCount

executor/infoschema_reader.go

@@ -1460,7 +1460,7 @@ func (e *memtableRetriever) setDataForProcessList(ctx sessionctx.Context) {
 			continue
 		}
 
-		rows := pi.ToRow(ctx.GetSessionVars().StmtCtx.TimeZone)
+		rows := pi.ToRow(ctx.GetSessionVars().StmtCtx.TimeZone())
 		record := types.MakeDatums(rows...)
 		records = append(records, record)
 	}

executor/simple.go

@@ -2807,7 +2807,7 @@ func (e *SimpleExec) executeAdminFlushPlanCache(s *ast.AdminStmt) error {
 		e.Ctx().GetSessionVars().StmtCtx.AppendWarning(errors.New("The plan cache is disable. So there no need to flush the plan cache"))
 		return nil
 	}
-	now := types.NewTime(types.FromGoTime(time.Now().In(e.Ctx().GetSessionVars().StmtCtx.TimeZone)), mysql.TypeTimestamp, 3)
+	now := types.NewTime(types.FromGoTime(time.Now().In(e.Ctx().GetSessionVars().StmtCtx.TimeZone())), mysql.TypeTimestamp, 3)
 	e.Ctx().GetSessionVars().LastUpdateTime4PC = now
 	e.Ctx().GetSessionPlanCache().DeleteAll()
 	if s.StatementScope == ast.StatementScopeInstance {

executor/split_test.go

@@ -432,7 +432,7 @@ func TestClusterIndexSplitTable(t *testing.T) {
 	}(minRegionStepValue)
 	minRegionStepValue = 3
 	ctx := mock.NewContext()
-	sc := &stmtctx.StatementContext{TimeZone: time.Local}
+	sc := stmtctx.NewStmtCtxWithTimeZone(time.Local)
 	e := &SplitTableRegionExec{
 		BaseExecutor: exec.NewBaseExecutor(ctx, nil, 0),
 		tableInfo:    tbInfo,

executor/stmtsummary.go

@@ -142,7 +142,7 @@ func (e *stmtSummaryRetriever) initEvictedRowsReader(sctx sessionctx.Context) (*
 func (e *stmtSummaryRetriever) initSummaryRowsReader(sctx sessionctx.Context) (*rowsReader, error) {
 	vars := sctx.GetSessionVars()
 	user := vars.User
-	tz := vars.StmtCtx.TimeZone
+	tz := vars.StmtCtx.TimeZone()
 	columns := e.columns
 	priv := hasPriv(sctx, mysql.ProcessPriv)
 	instanceAddr, err := clusterTableInstanceAddr(sctx, e.table.Name.O)
@@ -241,7 +241,7 @@ func (r *stmtSummaryRetrieverV2) initEvictedRowsReader(sctx sessionctx.Context)
 func (r *stmtSummaryRetrieverV2) initSummaryRowsReader(ctx context.Context, sctx sessionctx.Context) (*rowsReader, error) {
 	vars := sctx.GetSessionVars()
 	user := vars.User
-	tz := vars.StmtCtx.TimeZone
+	tz := vars.StmtCtx.TimeZone()
 	stmtSummary := r.stmtSummary
 	columns := r.columns
 	timeRanges := r.timeRanges

executor/test/admintest/admin_test.go

@@ -1272,7 +1272,7 @@ func TestCheckFailReport(t *testing.T) {
 
 		txn, err := store.Begin()
 		require.NoError(t, err)
-		encoded, err := codec.EncodeKey(new(stmtctx.StatementContext), nil, types.NewBytesDatum([]byte{1, 0, 1, 0, 0, 1, 1}))
+		encoded, err := codec.EncodeKey(stmtctx.NewStmtCtx(), nil, types.NewBytesDatum([]byte{1, 0, 1, 0, 0, 1, 1}))
 		require.NoError(t, err)
 		hd, err := kv.NewCommonHandle(encoded)
 		require.NoError(t, err)

executor/test/executor/executor_test.go

@@ -954,7 +954,7 @@ func TestCheckIndex(t *testing.T) {
 
 	mockCtx := mock.NewContext()
 	idx := tb.Indices()[0]
-	sc := &stmtctx.StatementContext{TimeZone: time.Local}
+	sc := stmtctx.NewStmtCtxWithTimeZone(time.Local)
 
 	_, err = se.Execute(context.Background(), "admin check index t idx_inexistent")
 	require.Error(t, err)
@@ -1012,7 +1012,7 @@ func TestCheckIndex(t *testing.T) {
 func setColValue(t *testing.T, txn kv.Transaction, key kv.Key, v types.Datum) {
 	row := []types.Datum{v, {}}
 	colIDs := []int64{2, 3}
-	sc := &stmtctx.StatementContext{TimeZone: time.Local}
+	sc := stmtctx.NewStmtCtxWithTimeZone(time.Local)
 	rd := rowcodec.Encoder{Enable: true}
 	value, err := tablecodec.EncodeRow(sc, row, colIDs, nil, nil, &rd)
 	require.NoError(t, err)

expression/aggregation/util_test.go

@@ -24,7 +24,7 @@ import (
 )
 
 func TestDistinct(t *testing.T) {
-	sc := &stmtctx.StatementContext{TimeZone: time.Local}
+	sc := stmtctx.NewStmtCtxWithTimeZone(time.Local)
 	dc := createDistinctChecker(sc)
 	testCases := []struct {
 		vals   []interface{}

expression/bench_test.go

@@ -58,7 +58,7 @@ func (h *benchHelper) init() {
 	numRows := 4 * 1024
 
 	h.ctx = mock.NewContext()
-	h.ctx.GetSessionVars().StmtCtx.TimeZone = time.Local
+	h.ctx.GetSessionVars().StmtCtx.SetTimeZone(time.Local)
 	h.ctx.GetSessionVars().InitChunkSize = 32
 	h.ctx.GetSessionVars().MaxChunkSize = numRows
 

expression/builtin_cast.go

@@ -476,7 +476,13 @@ func (b *castJSONAsArrayFunctionSig) Clone() builtinFunc {
 }
 
 // fakeSctx is used to ignore the sql mode, `cast as array` should always return error if any.
-var fakeSctx = &stmtctx.StatementContext{InInsertStmt: true}
+var fakeSctx = newFakeSctx()
+
+func newFakeSctx() *stmtctx.StatementContext {
+	sc := stmtctx.NewStmtCtx()
+	sc.InInsertStmt = true
+	return sc
+}
 
 func (b *castJSONAsArrayFunctionSig) evalJSON(row chunk.Row) (res types.BinaryJSON, isNull bool, err error) {
 	val, isNull, err := b.args[0].EvalJSON(b.ctx, row)

expression/builtin_cast_test.go

@@ -297,12 +297,12 @@ func TestCastFuncSig(t *testing.T) {
 
 	sc := ctx.GetSessionVars().StmtCtx
 	originIgnoreTruncate := sc.IgnoreTruncate.Load()
-	originTZ := sc.TimeZone
+	originTZ := sc.TimeZone()
 	sc.IgnoreTruncate.Store(true)
-	sc.TimeZone = time.UTC
+	sc.SetTimeZone(time.UTC)
 	defer func() {
 		sc.IgnoreTruncate.Store(originIgnoreTruncate)
-		sc.TimeZone = originTZ
+		sc.SetTimeZone(originTZ)
 	}()
 	var sig builtinFunc
 
@@ -1292,10 +1292,10 @@ func TestWrapWithCastAsTypesClasses(t *testing.T) {
 func TestWrapWithCastAsTime(t *testing.T) {
 	ctx := createContext(t)
 	sc := ctx.GetSessionVars().StmtCtx
-	save := sc.TimeZone
-	sc.TimeZone = time.UTC
+	save := sc.TimeZone()
+	sc.SetTimeZone(time.UTC)
 	defer func() {
-		sc.TimeZone = save
+		sc.SetTimeZone(save)
 	}()
 	cases := []struct {
 		expr Expression