diff --git a/planner/core/cache.go b/planner/core/cache.go
index 3bc3c7aef0a1a..7e741e203d3dc 100644
--- a/planner/core/cache.go
+++ b/planner/core/cache.go
@@ -109,7 +109,6 @@ func (key *planCacheKey) Hash() []byte {
 			key.hash = append(key.hash, kv.TiFlash.Name()...)
 		}
 		key.hash = codec.EncodeInt(key.hash, int64(key.selectLimit))
-		key.hash = append(key.hash, hack.Slice(key.bindSQL)...)
 	}
 	return key.hash
 }
diff --git a/server/driver_tidb.go b/server/driver_tidb.go
index f817b4d85bfcb..0840cceb86c0a 100644
--- a/server/driver_tidb.go
+++ b/server/driver_tidb.go
@@ -25,7 +25,6 @@ import (
 	"github.com/pingcap/tidb/parser/charset"
 	"github.com/pingcap/tidb/parser/mysql"
 	"github.com/pingcap/tidb/parser/terror"
-	"github.com/pingcap/tidb/planner"
 	"github.com/pingcap/tidb/planner/core"
 	"github.com/pingcap/tidb/session"
 	"github.com/pingcap/tidb/sessionctx/stmtctx"