From d942a335e3ae1dd8c47356e4422360378023434b Mon Sep 17 00:00:00 2001
From: Chao Wang <cclcwangchao@hotmail.com>
Date: Mon, 16 Oct 2023 10:48:21 +0800
Subject: [PATCH] json fake context

---
 br/pkg/lightning/backend/kv/session.go | 1 +
 pkg/ddl/backfilling_scheduler.go       | 7 +------
 pkg/expression/builtin_cast.go         | 1 -
 3 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/br/pkg/lightning/backend/kv/session.go b/br/pkg/lightning/backend/kv/session.go
index 470bbedaa5b8c..ec8cc154e1065 100644
--- a/br/pkg/lightning/backend/kv/session.go
+++ b/br/pkg/lightning/backend/kv/session.go
@@ -312,6 +312,7 @@ func NewSession(options *encode.SessionOptions, logger log.Logger) *Session {
 			}
 		}
 	}
+
 	vars.StmtCtx.SetTimeZone(vars.Location())
 	vars.StmtCtx.SetTypeFlags(types.StrictFlags.
 		WithClipNegativeToZero(true),
diff --git a/pkg/ddl/backfilling_scheduler.go b/pkg/ddl/backfilling_scheduler.go
index 2ad15edcb564c..9e4dd7c02208c 100644
--- a/pkg/ddl/backfilling_scheduler.go
+++ b/pkg/ddl/backfilling_scheduler.go
@@ -18,7 +18,6 @@ import (
 	"context"
 	"fmt"
 	"sync"
-	"time"
 
 	"github.com/pingcap/errors"
 	"github.com/pingcap/tidb/pkg/ddl/copr"
@@ -149,11 +148,6 @@ func initSessCtx(
 	sqlMode mysql.SQLMode,
 	tzLocation *model.TimeZoneLocation,
 ) error {
-	// Unify the TimeZone settings in newContext.
-	if sessCtx.GetSessionVars().StmtCtx.TimeZone() == nil {
-		tz := *time.UTC
-		sessCtx.GetSessionVars().StmtCtx.SetTimeZone(&tz)
-	}
 	// Set the row encode format version.
 	rowFormat := variable.GetDDLReorgRowFormat()
 	sessCtx.GetSessionVars().RowEncoder.Enable = rowFormat != variable.DefTiDBRowFormatV1
@@ -162,6 +156,7 @@ func initSessCtx(
 	if err := setSessCtxLocation(sessCtx, tzLocation); err != nil {
 		return errors.Trace(err)
 	}
+	sessCtx.GetSessionVars().StmtCtx.SetTimeZone(sessCtx.GetSessionVars().Location())
 	sessCtx.GetSessionVars().StmtCtx.BadNullAsWarning = !sqlMode.HasStrictMode()
 	sessCtx.GetSessionVars().StmtCtx.TruncateAsWarning = !sqlMode.HasStrictMode()
 	sessCtx.GetSessionVars().StmtCtx.OverflowAsWarning = !sqlMode.HasStrictMode()
diff --git a/pkg/expression/builtin_cast.go b/pkg/expression/builtin_cast.go
index a2118afba5eff..06044776811c7 100644
--- a/pkg/expression/builtin_cast.go
+++ b/pkg/expression/builtin_cast.go
@@ -480,7 +480,6 @@ var fakeSctx = newFakeSctx()
 
 func newFakeSctx() *stmtctx.StatementContext {
 	sc := stmtctx.NewStmtCtx()
-	sc.InInsertStmt = true
 	sc.SetTypeFlags(types.StrictFlags.
 		WithClipNegativeToZero(true),
 	)