diff --git a/go.mod b/go.mod
index 52d1268866319..ca86122312749 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,7 @@ require (
 	github.com/golang/protobuf v1.5.3
 	github.com/klauspost/compress v1.14.4
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d
-	github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87
+	github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723
 	github.com/milvus-io/milvus/pkg v0.0.0-00010101000000-000000000000
 	github.com/minio/minio-go/v7 v7.0.17
 	github.com/panjf2000/ants/v2 v2.7.2
diff --git a/go.sum b/go.sum
index 49a94643b5340..526461826147e 100644
--- a/go.sum
+++ b/go.sum
@@ -579,16 +579,8 @@ github.com/microcosm-cc/bluemonday v1.0.2/go.mod h1:iVP4YcDBq+n/5fb23BhYFvIMq/le
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
 github.com/milvus-io/gorocksdb v0.0.0-20220624081344-8c5f4212846b h1:TfeY0NxYxZzUfIfYe5qYDBzt4ZYRqzUjTR6CvUzjat8=
 github.com/milvus-io/gorocksdb v0.0.0-20220624081344-8c5f4212846b/go.mod h1:iwW+9cWfIzzDseEBCCeDSN5SD16Tidvy8cwQ7ZY8Qj4=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230421091228-eaa38c831a61 h1:EX2oknwzltpw6yZ7QZEphVHM3YTysjdbb5keleFjs3M=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230421091228-eaa38c831a61/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230515081521-d963c95b041f h1:uZzVaSbUtxMdEix9By6z+M/H/XNkXRQJdZQ9HP/wHtc=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230515081521-d963c95b041f/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230517025117-8ba62a3f3a63 h1:V962mSHjOFUbuMgAXziBdbYPOCVZmN1MkqEeKpME+MA=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230517025117-8ba62a3f3a63/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230518083323-3400e837ef47 h1:Dp5AAbOSTq31QLatGXamBMk/o670MkbRi8NoW17ypew=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230518083323-3400e837ef47/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87 h1:LdDHjEjus1NdC9ELbpQa6DfUHJotJUW2kD4S+8nvjw4=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
+github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723 h1:VWwQdHN1JuM/Q+9QK1bOyTpEqPHTdAKw5qOK0Lgua/c=
+github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
 github.com/milvus-io/pulsar-client-go v0.6.10 h1:eqpJjU+/QX0iIhEo3nhOqMNXL+TyInAs1IAHZCrCM/A=
 github.com/milvus-io/pulsar-client-go v0.6.10/go.mod h1:lQqCkgwDF8YFYjKA+zOheTk1tev2B+bKj5j7+nm8M1w=
 github.com/minio/asm2plan9s v0.0.0-20200509001527-cdd76441f9d8 h1:AMFGa4R4MiIpspGNG7Z948v4n35fFGB3RR3G/ry4FWs=
diff --git a/internal/proxy/meta_cache.go b/internal/proxy/meta_cache.go
index ac06e7ada1c26..317b580d2f3f2 100644
--- a/internal/proxy/meta_cache.go
+++ b/internal/proxy/meta_cache.go
@@ -94,6 +94,7 @@ type collectionInfo struct {
 	shardLeaders        *shardLeaders
 	createdTimestamp    uint64
 	createdUtcTimestamp uint64
+	consistencyLevel    commonpb.ConsistencyLevel
 }
 
 func (info *collectionInfo) isCollectionCached() bool {
@@ -337,6 +338,7 @@ func (m *MetaCache) updateCollection(coll *milvuspb.DescribeCollectionResponse,
 	m.collInfo[collectionName].collID = coll.CollectionID
 	m.collInfo[collectionName].createdTimestamp = coll.CreatedTimestamp
 	m.collInfo[collectionName].createdUtcTimestamp = coll.CreatedUtcTimestamp
+	m.collInfo[collectionName].consistencyLevel = coll.ConsistencyLevel
 }
 
 func (m *MetaCache) GetPartitionID(ctx context.Context, collectionName string, partitionName string) (typeutil.UniqueID, error) {
@@ -477,6 +479,7 @@ func (m *MetaCache) describeCollection(ctx context.Context, collectionName strin
 		PhysicalChannelNames: coll.PhysicalChannelNames,
 		CreatedTimestamp:     coll.CreatedTimestamp,
 		CreatedUtcTimestamp:  coll.CreatedUtcTimestamp,
+		ConsistencyLevel:     coll.ConsistencyLevel,
 	}
 	for _, field := range coll.Schema.Fields {
 		if field.FieldID >= common.StartOfUserFieldID {
diff --git a/internal/proxy/task_search.go b/internal/proxy/task_search.go
index 2f9db73287fce..c11e22bff49a7 100644
--- a/internal/proxy/task_search.go
+++ b/internal/proxy/task_search.go
@@ -276,10 +276,16 @@ func (t *searchTask) PreExecute(ctx context.Context) error {
 
 	if t.request.GetDslType() == commonpb.DslType_BoolExprV1 {
 		annsField, err := funcutil.GetAttrByKeyFromRepeatedKV(AnnsFieldKey, t.request.GetSearchParams())
-		if err != nil {
-			return errors.New(AnnsFieldKey + " not found in search_params")
+		if err != nil || len(annsField) == 0 {
+			if enableMultipleVectorFields {
+				return errors.New(AnnsFieldKey + " not found in search_params")
+			}
+			vecFieldSchema, err2 := typeutil.GetVectorFieldSchema(t.schema)
+			if err2 != nil {
+				return errors.New(AnnsFieldKey + " not found in schema")
+			}
+			annsField = vecFieldSchema.Name
 		}
-
 		queryInfo, offset, err := parseSearchInfo(t.request.GetSearchParams())
 		if err != nil {
 			return err
@@ -330,10 +336,29 @@ func (t *searchTask) PreExecute(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	t.SearchRequest.TravelTimestamp = travelTimestamp
-
+	collectionInfo, err2 := globalMetaCache.GetCollectionInfo(ctx, collectionName)
+	if err2 != nil {
+		log.Ctx(ctx).Debug("Proxy::searchTask::PreExecute failed to GetCollectionInfo from cache",
+			zap.Any("collectionName", collectionName), zap.Error(err2))
+		return err2
+	}
 	guaranteeTs := t.request.GetGuaranteeTimestamp()
-	guaranteeTs = parseGuaranteeTs(guaranteeTs, t.BeginTs())
+	t.SearchRequest.TravelTimestamp = travelTimestamp
+	var consistencyLevel commonpb.ConsistencyLevel
+	useDefaultConsistency := t.request.GetUseDefaultConsistency()
+	if useDefaultConsistency {
+		consistencyLevel = collectionInfo.consistencyLevel
+		guaranteeTs = parseGuaranteeTsFromConsistency(guaranteeTs, t.BeginTs(), consistencyLevel)
+	} else {
+		consistencyLevel = t.request.GetConsistencyLevel()
+		//Compatibility logic, parse guarantee timestamp
+		if consistencyLevel == 0 && guaranteeTs > 0 {
+			guaranteeTs = parseGuaranteeTs(guaranteeTs, t.BeginTs())
+		} else {
+			// parse from guarantee timestamp and user input consistency level
+			guaranteeTs = parseGuaranteeTsFromConsistency(guaranteeTs, t.BeginTs(), consistencyLevel)
+		}
+	}
 	t.SearchRequest.GuaranteeTimestamp = guaranteeTs
 
 	if deadline, ok := t.TraceCtx().Deadline(); ok {
@@ -345,6 +370,8 @@ func (t *searchTask) PreExecute(ctx context.Context) error {
 
 	log.Ctx(ctx).Debug("search PreExecute done.",
 		zap.Uint64("travel_ts", travelTimestamp), zap.Uint64("guarantee_ts", guaranteeTs),
+		zap.Bool("use_default_consistency", useDefaultConsistency),
+		zap.Any("consistency level", consistencyLevel),
 		zap.Uint64("timeout_ts", t.SearchRequest.GetTimeoutTimestamp()))
 
 	return nil
diff --git a/internal/proxy/util.go b/internal/proxy/util.go
index 3a1075fdc506c..7298b691826bf 100644
--- a/internal/proxy/util.go
+++ b/internal/proxy/util.go
@@ -654,6 +654,19 @@ func ReplaceID2Name(oldStr string, id int64, name string) string {
 	return strings.ReplaceAll(oldStr, strconv.FormatInt(id, 10), name)
 }
 
+func parseGuaranteeTsFromConsistency(ts, tMax typeutil.Timestamp, consistency commonpb.ConsistencyLevel) typeutil.Timestamp {
+	switch consistency {
+	case commonpb.ConsistencyLevel_Strong:
+		ts = tMax
+	case commonpb.ConsistencyLevel_Bounded:
+		ratio := Params.CommonCfg.GracefulTime.GetAsDuration(time.Millisecond)
+		ts = tsoutil.AddPhysicalDurationOnTs(tMax, -ratio)
+	case commonpb.ConsistencyLevel_Eventually:
+		ts = 1
+	}
+	return ts
+}
+
 func parseGuaranteeTs(ts, tMax typeutil.Timestamp) typeutil.Timestamp {
 	switch ts {
 	case strongTS:
diff --git a/internal/proxy/util_test.go b/internal/proxy/util_test.go
index 8d18a02441321..9aab6be4e3699 100644
--- a/internal/proxy/util_test.go
+++ b/internal/proxy/util_test.go
@@ -1703,3 +1703,35 @@ func Test_UpsertTaskCheckPrimaryFieldData(t *testing.T) {
 	_, err = checkPrimaryFieldData(case6.schema, case6.result, case6.insertMsg, false)
 	assert.NotEqual(t, nil, err)
 }
+
+func Test_ParseGuaranteeTs(t *testing.T) {
+	strongTs := typeutil.Timestamp(0)
+	boundedTs := typeutil.Timestamp(2)
+	tsNow := tsoutil.GetCurrentTime()
+	tsMax := tsoutil.GetCurrentTime()
+
+	assert.Equal(t, tsMax, parseGuaranteeTs(strongTs, tsMax))
+	ratio := Params.CommonCfg.GracefulTime.GetAsDuration(time.Millisecond)
+	assert.Equal(t, tsoutil.AddPhysicalDurationOnTs(tsMax, -ratio), parseGuaranteeTs(boundedTs, tsMax))
+	assert.Equal(t, tsNow, parseGuaranteeTs(tsNow, tsMax))
+}
+
+func Test_ParseGuaranteeTsFromConsistency(t *testing.T) {
+	strong := commonpb.ConsistencyLevel_Strong
+	bounded := commonpb.ConsistencyLevel_Bounded
+	eventually := commonpb.ConsistencyLevel_Eventually
+	session := commonpb.ConsistencyLevel_Session
+	customized := commonpb.ConsistencyLevel_Customized
+
+	tsDefault := typeutil.Timestamp(0)
+	tsEventually := typeutil.Timestamp(1)
+	tsNow := tsoutil.GetCurrentTime()
+	tsMax := tsoutil.GetCurrentTime()
+
+	assert.Equal(t, tsMax, parseGuaranteeTsFromConsistency(tsDefault, tsMax, strong))
+	ratio := Params.CommonCfg.GracefulTime.GetAsDuration(time.Millisecond)
+	assert.Equal(t, tsoutil.AddPhysicalDurationOnTs(tsMax, -ratio), parseGuaranteeTsFromConsistency(tsDefault, tsMax, bounded))
+	assert.Equal(t, tsNow, parseGuaranteeTsFromConsistency(tsNow, tsMax, session))
+	assert.Equal(t, tsNow, parseGuaranteeTsFromConsistency(tsNow, tsMax, customized))
+	assert.Equal(t, tsEventually, parseGuaranteeTsFromConsistency(tsDefault, tsMax, eventually))
+}
diff --git a/pkg/go.mod b/pkg/go.mod
index f60a0b7332eea..a39831f22e0f4 100644
--- a/pkg/go.mod
+++ b/pkg/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/klauspost/compress v1.14.4
 	github.com/lingdor/stackerror v0.0.0-20191119040541-976d8885ed76
-	github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87
+	github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723
 	github.com/panjf2000/ants/v2 v2.4.8
 	github.com/prometheus/client_golang v1.11.1
 	github.com/samber/lo v1.27.0
diff --git a/pkg/go.sum b/pkg/go.sum
index 9621129b8f75f..a6fb3c6075f3c 100644
--- a/pkg/go.sum
+++ b/pkg/go.sum
@@ -465,16 +465,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5
 github.com/mediocregopher/radix/v3 v3.4.2/go.mod h1:8FL3F6UQRXHXIBSPUs5h0RybMF8i4n7wVopoX3x7Bv8=
 github.com/microcosm-cc/bluemonday v1.0.2/go.mod h1:iVP4YcDBq+n/5fb23BhYFvIMq/leAFZyRl6bYmGDlGc=
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230416064425-aec3e83865b2 h1:G5uN68X/7eoCfHUkNvkbNueFhHuohCZG94te+ApLAOY=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230416064425-aec3e83865b2/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230515081521-d963c95b041f h1:uZzVaSbUtxMdEix9By6z+M/H/XNkXRQJdZQ9HP/wHtc=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230515081521-d963c95b041f/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230517025117-8ba62a3f3a63 h1:V962mSHjOFUbuMgAXziBdbYPOCVZmN1MkqEeKpME+MA=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230517025117-8ba62a3f3a63/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230518083323-3400e837ef47 h1:Dp5AAbOSTq31QLatGXamBMk/o670MkbRi8NoW17ypew=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230518083323-3400e837ef47/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87 h1:LdDHjEjus1NdC9ELbpQa6DfUHJotJUW2kD4S+8nvjw4=
-github.com/milvus-io/milvus-proto/go-api v0.0.0-20230522080721-ef84459b8f87/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
+github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723 h1:VWwQdHN1JuM/Q+9QK1bOyTpEqPHTdAKw5qOK0Lgua/c=
+github.com/milvus-io/milvus-proto/go-api v0.0.0-20230529034923-4579ee9d5723/go.mod h1:148qnlmZ0Fdm1Fq+Mj/OW2uDoEP25g3mjh0vMGtkgmk=
 github.com/milvus-io/pulsar-client-go v0.6.10 h1:eqpJjU+/QX0iIhEo3nhOqMNXL+TyInAs1IAHZCrCM/A=
 github.com/milvus-io/pulsar-client-go v0.6.10/go.mod h1:lQqCkgwDF8YFYjKA+zOheTk1tev2B+bKj5j7+nm8M1w=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
diff --git a/pkg/util/typeutil/schema.go b/pkg/util/typeutil/schema.go
index a68714f13536c..fa19c899583f3 100644
--- a/pkg/util/typeutil/schema.go
+++ b/pkg/util/typeutil/schema.go
@@ -689,6 +689,16 @@ func MergeFieldData(dst []*schemapb.FieldData, src []*schemapb.FieldData) error
 	return nil
 }
 
+// GetVectorFieldSchema get vector field schema from collection schema.
+func GetVectorFieldSchema(schema *schemapb.CollectionSchema) (*schemapb.FieldSchema, error) {
+	for _, fieldSchema := range schema.Fields {
+		if IsVectorType(fieldSchema.DataType) {
+			return fieldSchema, nil
+		}
+	}
+	return nil, errors.New("vector field is not found")
+}
+
 // GetPrimaryFieldSchema get primary field schema from collection schema
 func GetPrimaryFieldSchema(schema *schemapb.CollectionSchema) (*schemapb.FieldSchema, error) {
 	for _, fieldSchema := range schema.Fields {
diff --git a/pkg/util/typeutil/schema_test.go b/pkg/util/typeutil/schema_test.go
index 98e17f02e7570..3df4fe5a47ad5 100644
--- a/pkg/util/typeutil/schema_test.go
+++ b/pkg/util/typeutil/schema_test.go
@@ -209,6 +209,64 @@ func TestSchema(t *testing.T) {
 	})
 }
 
+func TestSchema_GetVectorFieldSchema(t *testing.T) {
+
+	schemaNormal := &schemapb.CollectionSchema{
+		Name:        "testColl",
+		Description: "",
+		AutoID:      false,
+		Fields: []*schemapb.FieldSchema{
+			{
+				FieldID:      100,
+				Name:         "field_int64",
+				IsPrimaryKey: true,
+				Description:  "",
+				DataType:     5,
+			},
+			{
+				FieldID:      107,
+				Name:         "field_float_vector",
+				IsPrimaryKey: false,
+				Description:  "",
+				DataType:     101,
+				TypeParams: []*commonpb.KeyValuePair{
+					{
+						Key:   common.DimKey,
+						Value: "128",
+					},
+				},
+			},
+		},
+	}
+
+	t.Run("GetVectorFieldSchema", func(t *testing.T) {
+		fieldSchema, err := GetVectorFieldSchema(schemaNormal)
+		assert.Equal(t, "field_float_vector", fieldSchema.Name)
+		assert.Nil(t, err)
+	})
+
+	schemaInvalid := &schemapb.CollectionSchema{
+		Name:        "testColl",
+		Description: "",
+		AutoID:      false,
+		Fields: []*schemapb.FieldSchema{
+			{
+				FieldID:      100,
+				Name:         "field_int64",
+				IsPrimaryKey: true,
+				Description:  "",
+				DataType:     5,
+			},
+		},
+	}
+
+	t.Run("GetVectorFieldSchemaInvalid", func(t *testing.T) {
+		_, err := GetVectorFieldSchema(schemaInvalid)
+		assert.Error(t, err)
+	})
+
+}
+
 func TestSchema_invalid(t *testing.T) {
 	t.Run("Duplicate field name", func(t *testing.T) {
 		schema := &schemapb.CollectionSchema{
diff --git a/scripts/run_go_unittest.sh b/scripts/run_go_unittest.sh
index a4a58dec3a111..04bdbcd356859 100755
--- a/scripts/run_go_unittest.sh
+++ b/scripts/run_go_unittest.sh
@@ -109,7 +109,7 @@ function test_util()
 {
 go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/funcutil/..." -failfast -count=1
 go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/paramtable/..." -failfast -count=1
-go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/retry/..." -failfast -count=1
+go test -race -cover ${APPLE_SILICON_FLAG} "${PKG_DIR}/util/retry/..." -failfast -count=1
 go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/sessionutil/..." -failfast -count=1
 go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/typeutil/..." -failfast -count=1
 go test -race -cover ${APPLE_SILICON_FLAG} "${MILVUS_DIR}/util/importutil/..." -failfast -count=1
diff --git a/tests/python_client/requirements.txt b/tests/python_client/requirements.txt
index 7ad30d1424697..e965ac7046c47 100644
--- a/tests/python_client/requirements.txt
+++ b/tests/python_client/requirements.txt
@@ -12,7 +12,7 @@ allure-pytest==2.7.0
 pytest-print==0.2.1
 pytest-level==0.1.1
 pytest-xdist==2.5.0
-pymilvus==2.4.0.dev27
+pymilvus==2.4.0.dev59
 pytest-rerunfailures==9.1.1
 git+https://github.com/Projectplace/pytest-tags
 ndg-httpsclient
diff --git a/tests/python_client/testcases/test_collection.py b/tests/python_client/testcases/test_collection.py
index 6bef5cf036558..85255f31f747d 100644
--- a/tests/python_client/testcases/test_collection.py
+++ b/tests/python_client/testcases/test_collection.py
@@ -630,7 +630,7 @@ def test_collection_multi_primary_fields(self):
         self._connect()
         int_field_one = cf.gen_int64_field(is_primary=True)
         int_field_two = cf.gen_int64_field(name="int2", is_primary=True)
-        error = {ct.err_code: 0, ct.err_msg: "Primary key field can only be one."}
+        error = {ct.err_code: 0, ct.err_msg: "Expected only one primary key field"}
         self.collection_schema_wrap.init_collection_schema(
             fields=[int_field_one, int_field_two, cf.gen_float_vec_field()],
             check_task=CheckTasks.err_res, check_items=error)
diff --git a/tests/python_client/testcases/test_search.py b/tests/python_client/testcases/test_search.py
index f70a102649ddb..18961c2148a74 100644
--- a/tests/python_client/testcases/test_search.py
+++ b/tests/python_client/testcases/test_search.py
@@ -1223,6 +1223,42 @@ def test_search_normal(self, nq, dim, auto_id, is_flush):
                                          "ids": insert_ids,
                                          "limit": default_limit})
 
+    @pytest.mark.tags(CaseLabel.L0)
+    def test_search_normal_without_specify_anns_field(self):
+        """
+        target: test search normal case
+        method: create connection, collection, insert and search
+        expected: 1. search returned with 0 before travel timestamp
+                  2. search successfully with limit(topK) after travel timestamp
+        """
+        nq = 2
+        dim = 32
+        auto_id = True
+        # 1. initialize with data
+        collection_w, _, _, insert_ids, time_stamp = \
+            self.init_collection_general(prefix, True, auto_id=auto_id, dim=dim, is_flush=True)[0:5]
+        # 2. search before insert time_stamp
+        log.info("test_search_normal: searching collection %s" % collection_w.name)
+        vectors = [[random.random() for _ in range(dim)] for _ in range(nq)]
+        collection_w.search(vectors[:nq], "",
+                            default_search_params, default_limit,
+                            default_search_exp,
+                            travel_timestamp=time_stamp - 1,
+                            check_task=CheckTasks.err_res,
+                            check_items={"err_code": 1,
+                                         "err_msg": f"only support to travel back to 0s so far"})
+        # 3. search after insert time_stamp
+        collection_w.search(vectors[:nq], "",
+                            default_search_params, default_limit,
+                            default_search_exp,
+                            travel_timestamp=0,
+                            guarantee_timestamp=0,
+                            check_task=CheckTasks.check_search_results,
+                            check_items={"nq": nq,
+                                         "ids": insert_ids,
+                                         "limit": default_limit})
+
+
     @pytest.mark.tags(CaseLabel.L0)
     def test_search_with_hit_vectors(self, nq, dim, auto_id):
         """