diff --git a/go.mod b/go.mod
index bb45ac765e..0a63cb44d2 100644
--- a/go.mod
+++ b/go.mod
@@ -141,11 +141,11 @@ require (
 	k8s.io/klog v0.1.0 // indirect
 	k8s.io/kubernetes v1.12.3
 	yunion.io/x/executor v0.0.0-20200227030256-a18417815e74
-	yunion.io/x/jsonutils v0.0.0-20200113074440-9297fd00ba07
+	yunion.io/x/jsonutils v0.0.0-20200303051356-aa609aba0cda
 	yunion.io/x/log v0.0.0-20190629062853-9f6483a7103d
-	yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070
+	yunion.io/x/pkg v0.0.0-20200304112442-9dae9351325e
 	yunion.io/x/s3cli v0.0.0-20190917004522-13ac36d8687e
-	yunion.io/x/sqlchemy v0.0.0-20200221103553-6a98f7f8ab92
+	yunion.io/x/sqlchemy v0.0.0-20200312002602-1177cd8fbc57
 	yunion.io/x/structarg v0.0.0-20190809075558-115bed041de3
 )
 
diff --git a/go.sum b/go.sum
index e16c5276c9..aefc491402 100644
--- a/go.sum
+++ b/go.sum
@@ -701,8 +701,8 @@ yunion.io/x/executor v0.0.0-20200227030256-a18417815e74 h1:A15C6VdVRWvmQ9pAJHrUs
 yunion.io/x/executor v0.0.0-20200227030256-a18417815e74/go.mod h1:Uxuou9WQIeJXNpy7t2fPLL0BYLvLiMvGQwY7Qc6aSws=
 yunion.io/x/jsonutils v0.0.0-20190625054549-a964e1e8a051 h1:vtZw2iwGrsARNSwRTREGjmr2BWPdxbmXVkb3kI1qu28=
 yunion.io/x/jsonutils v0.0.0-20190625054549-a964e1e8a051/go.mod h1:4N0/RVzsYL3kH3WE/H1BjUQdFiWu50JGCFQuuy+Z634=
-yunion.io/x/jsonutils v0.0.0-20200113074440-9297fd00ba07 h1:i6Im3w4UoyCIKOEtr0Y3aAPGrL9FYAzeFXoj3daXXt0=
-yunion.io/x/jsonutils v0.0.0-20200113074440-9297fd00ba07/go.mod h1:NpWHLv3D1iMpsp1Kv6o1ASPZmuSKutE3RIMhxKSOeAM=
+yunion.io/x/jsonutils v0.0.0-20200303051356-aa609aba0cda h1:wSwQj3MDGchGYM2RAo1riYhrTz4apH+5XyBnchuDi84=
+yunion.io/x/jsonutils v0.0.0-20200303051356-aa609aba0cda/go.mod h1:T7kxQJR13+t7z0TuT+Wzd7MTxBOk2H9c0pO1ONQSv90=
 yunion.io/x/log v0.0.0-20190514041436-04ce53b17c6b h1:Z9z+7iegu0HXuL+S8taVWRd1P4b9JJOgPXIeoqYrj7c=
 yunion.io/x/log v0.0.0-20190514041436-04ce53b17c6b/go.mod h1:+gauLs73omeJAPlsXcevLsJLKixV+sR/E7WSYTSx1fE=
 yunion.io/x/log v0.0.0-20190629062853-9f6483a7103d h1:59zrDL7Ft+hDukguJRmLr/Gdu/9V75x+yX99ovZwfaA=
@@ -710,13 +710,13 @@ yunion.io/x/log v0.0.0-20190629062853-9f6483a7103d/go.mod h1:LC6f/4FozL0iaAbnFt2
 yunion.io/x/pkg v0.0.0-20190620104149-945c25821dbf h1:OsKC+2ghZHwp+Ztm/MwKlLKKRiE7QcPG8eTp0GmsHbg=
 yunion.io/x/pkg v0.0.0-20190620104149-945c25821dbf/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
 yunion.io/x/pkg v0.0.0-20190628082551-f4033ba2ea30/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
-yunion.io/x/pkg v0.0.0-20200103043034-27c6f82160fa h1:+7zYi8MhaOW/53/7FOERnhQqAU4UhgaOVIS+AMzTKNU=
-yunion.io/x/pkg v0.0.0-20200103043034-27c6f82160fa/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
 yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070 h1:rKnYgtvMHKmzPEUTkyNjyKOG7wzjpUvI7fcZwLNGQXw=
 yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
+yunion.io/x/pkg v0.0.0-20200304112442-9dae9351325e h1:rBfX77+VEBVpe6Xxy2gDa4WB7qbtndWvXcrVKzleF84=
+yunion.io/x/pkg v0.0.0-20200304112442-9dae9351325e/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
 yunion.io/x/s3cli v0.0.0-20190917004522-13ac36d8687e h1:v+EzIadodSwkdZ/7bremd7J8J50Cise/HCylsOJngmo=
 yunion.io/x/s3cli v0.0.0-20190917004522-13ac36d8687e/go.mod h1:0iFKpOs1y4lbCxeOmq3Xx/0AcQoewVPwj62eRluioEo=
-yunion.io/x/sqlchemy v0.0.0-20200221103553-6a98f7f8ab92 h1:Iz70/alKMAW3KeePhmExuhWsYw1MGTcMr5ewAL5lj1I=
-yunion.io/x/sqlchemy v0.0.0-20200221103553-6a98f7f8ab92/go.mod h1:FTdwPdGhMgh4E+UFXc9klI1Ok34fMuybTT+jLhOaIjI=
+yunion.io/x/sqlchemy v0.0.0-20200312002602-1177cd8fbc57 h1:KtQAuLJ00RSUVqkiRmJ1DiDABiw0U3xxXnzD3lGavaY=
+yunion.io/x/sqlchemy v0.0.0-20200312002602-1177cd8fbc57/go.mod h1:FTdwPdGhMgh4E+UFXc9klI1Ok34fMuybTT+jLhOaIjI=
 yunion.io/x/structarg v0.0.0-20190809075558-115bed041de3 h1:bfC8EhXYvyGYldRWlzxiCM39Zfj3s3+zham9mW2h2LE=
 yunion.io/x/structarg v0.0.0-20190809075558-115bed041de3/go.mod h1:EP6NSv2C0zzqBDTKumv8hPWLb3XvgMZDHQRfyuOrQng=
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 88642f858c..32799db704 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -884,12 +884,12 @@ sigs.k8s.io/yaml
 yunion.io/x/executor/apis
 yunion.io/x/executor/client
 yunion.io/x/executor/server
-# yunion.io/x/jsonutils v0.0.0-20200113074440-9297fd00ba07
+# yunion.io/x/jsonutils v0.0.0-20200303051356-aa609aba0cda
 yunion.io/x/jsonutils
 # yunion.io/x/log v0.0.0-20190629062853-9f6483a7103d
 yunion.io/x/log
 yunion.io/x/log/hooks
-# yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070
+# yunion.io/x/pkg v0.0.0-20200304112442-9dae9351325e
 yunion.io/x/pkg/errors
 yunion.io/x/pkg/gotypes
 yunion.io/x/pkg/prettytable
@@ -921,7 +921,7 @@ yunion.io/x/pkg/util/workqueue
 yunion.io/x/pkg/utils
 # yunion.io/x/s3cli v0.0.0-20190917004522-13ac36d8687e
 yunion.io/x/s3cli
-# yunion.io/x/sqlchemy v0.0.0-20200221103553-6a98f7f8ab92
+# yunion.io/x/sqlchemy v0.0.0-20200312002602-1177cd8fbc57
 yunion.io/x/sqlchemy
 # yunion.io/x/structarg v0.0.0-20190809075558-115bed041de3
 yunion.io/x/structarg
diff --git a/vendor/yunion.io/x/jsonutils/go.mod b/vendor/yunion.io/x/jsonutils/go.mod
index 3696e8e3f0..a521db2cb8 100644
--- a/vendor/yunion.io/x/jsonutils/go.mod
+++ b/vendor/yunion.io/x/jsonutils/go.mod
@@ -6,10 +6,10 @@ require (
 	github.com/ghodss/yaml v1.0.0
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
-	github.com/pkg/errors v0.8.1
+	github.com/pkg/errors v0.8.1 // indirect
 	github.com/sirupsen/logrus v1.4.2 // indirect
 	golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4 // indirect
 	gopkg.in/yaml.v2 v2.2.2 // indirect
 	yunion.io/x/log v0.0.0-20190514041436-04ce53b17c6b
-	yunion.io/x/pkg v0.0.0-20200103043034-27c6f82160fa
+	yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070
 )
diff --git a/vendor/yunion.io/x/jsonutils/go.sum b/vendor/yunion.io/x/jsonutils/go.sum
index 1fecee9c1e..f965efca1e 100644
--- a/vendor/yunion.io/x/jsonutils/go.sum
+++ b/vendor/yunion.io/x/jsonutils/go.sum
@@ -35,7 +35,5 @@ gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 yunion.io/x/log v0.0.0-20190514041436-04ce53b17c6b h1:Z9z+7iegu0HXuL+S8taVWRd1P4b9JJOgPXIeoqYrj7c=
 yunion.io/x/log v0.0.0-20190514041436-04ce53b17c6b/go.mod h1:+gauLs73omeJAPlsXcevLsJLKixV+sR/E7WSYTSx1fE=
-yunion.io/x/pkg v0.0.0-20190620104149-945c25821dbf h1:OsKC+2ghZHwp+Ztm/MwKlLKKRiE7QcPG8eTp0GmsHbg=
-yunion.io/x/pkg v0.0.0-20190620104149-945c25821dbf/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
-yunion.io/x/pkg v0.0.0-20200103043034-27c6f82160fa h1:+7zYi8MhaOW/53/7FOERnhQqAU4UhgaOVIS+AMzTKNU=
-yunion.io/x/pkg v0.0.0-20200103043034-27c6f82160fa/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
+yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070 h1:rKnYgtvMHKmzPEUTkyNjyKOG7wzjpUvI7fcZwLNGQXw=
+yunion.io/x/pkg v0.0.0-20200302034534-fdf44d54b070/go.mod h1:t6rEGG2sQ4J7DhFxSZVOTjNd0YO/KlfWQyK1W4tog+E=
diff --git a/vendor/yunion.io/x/jsonutils/unmarshal.go b/vendor/yunion.io/x/jsonutils/unmarshal.go
index ef80b8730f..7739088a02 100644
--- a/vendor/yunion.io/x/jsonutils/unmarshal.go
+++ b/vendor/yunion.io/x/jsonutils/unmarshal.go
@@ -529,18 +529,23 @@ func setStructFieldAt(key string, v JSONObject, fieldValues reflectutils.SStruct
 		return nil
 	}
 	visited[key] = true
-	index := fieldValues.GetStructFieldIndex(key)
-	if index < 0 {
+	indexes := fieldValues.GetStructFieldIndexes(key)
+	if len(indexes) == 0 {
 		// no field match k, ignore
 		return nil
 	}
-	err := v.unmarshalValue(fieldValues[index].Value)
-	if err != nil {
-		return errors.Wrap(err, "JSONDict.unmarshalStruct")
-	}
-	depInfo, ok := fieldValues[index].Info.Tags["deprecated-by"]
-	if ok {
-		return setStructFieldAt(depInfo, v, fieldValues, visited)
+	for _, index := range indexes {
+		err := v.unmarshalValue(fieldValues[index].Value)
+		if err != nil {
+			return errors.Wrap(err, "JSONDict.unmarshalStruct")
+		}
+		depInfo, ok := fieldValues[index].Info.Tags["deprecated-by"]
+		if ok {
+			err := setStructFieldAt(depInfo, v, fieldValues, visited)
+			if err != nil {
+				return errors.Wrap(err, "setStructFieldAt")
+			}
+		}
 	}
 	return nil
 }
diff --git a/vendor/yunion.io/x/pkg/util/reflectutils/jsonfield.go b/vendor/yunion.io/x/pkg/util/reflectutils/jsonfield.go
index b19f02feb3..8871c1431f 100644
--- a/vendor/yunion.io/x/pkg/util/reflectutils/jsonfield.go
+++ b/vendor/yunion.io/x/pkg/util/reflectutils/jsonfield.go
@@ -63,13 +63,17 @@ func (s SStructFieldInfo) deepCopy() *SStructFieldInfo {
 }
 
 func ParseStructFieldJsonInfo(sf reflect.StructField) SStructFieldInfo {
+	return ParseFieldJsonInfo(sf.Name, sf.Tag)
+}
+
+func ParseFieldJsonInfo(name string, tag reflect.StructTag) SStructFieldInfo {
 	info := SStructFieldInfo{}
-	info.FieldName = sf.Name
+	info.FieldName = name
 	info.OmitEmpty = true
 	info.OmitZero = false
 	info.OmitFalse = false
 
-	info.Tags = utils.TagMap(sf.Tag)
+	info.Tags = utils.TagMap(tag)
 	if val, ok := info.Tags["json"]; ok {
 		keys := strings.Split(val, ",")
 		if len(keys) > 0 {
diff --git a/vendor/yunion.io/x/sqlchemy/query.go b/vendor/yunion.io/x/sqlchemy/query.go
index 7b0f257c57..499463067b 100644
--- a/vendor/yunion.io/x/sqlchemy/query.go
+++ b/vendor/yunion.io/x/sqlchemy/query.go
@@ -22,8 +22,8 @@ import (
 	"strings"
 
 	"yunion.io/x/log"
-	"yunion.io/x/pkg/util/reflectutils"
 	"yunion.io/x/pkg/errors"
+	"yunion.io/x/pkg/util/reflectutils"
 )
 
 type IQuery interface {
@@ -104,6 +104,8 @@ type SQuery struct {
 	offset   int
 
 	fieldCache map[string]IQueryField
+
+	snapshot string
 }
 
 type SSubQuery struct {
@@ -121,9 +123,9 @@ type SSubQueryField struct {
 
 func (sqf *SSubQueryField) Expression() string {
 	if len(sqf.alias) > 0 {
-		return fmt.Sprintf("%s.%s AS %s", sqf.query.alias, sqf.field.Name(), sqf.alias)
+		return fmt.Sprintf("`%s`.`%s` AS `%s`", sqf.query.alias, sqf.field.Name(), sqf.alias)
 	} else {
-		return fmt.Sprintf("%s.%s", sqf.query.alias, sqf.field.Name())
+		return fmt.Sprintf("`%s`.`%s`", sqf.query.alias, sqf.field.Name())
 	}
 }
 
@@ -173,7 +175,7 @@ func (sq *SSubQuery) findField(id string) IQueryField {
 	for i := range queryFields {
 		if queryFields[i].Name() == id {
 			sq.referedFields[id] = sq.query.Field(queryFields[i].Name())
-			return queryFields[i]
+			return sq.referedFields[id]
 		}
 	}
 	return nil
@@ -694,3 +696,15 @@ func (q *SQuery) Row2Struct(row IRowScanner, dest interface{}) error {
 	}
 	return q.RowMap2Struct(result, dest)
 }
+
+func (q *SQuery) Snapshot() *SQuery {
+	q.snapshot = q.String()
+	return q
+}
+
+func (q *SQuery) IsAltered() bool {
+	if len(q.snapshot) == 0 {
+		panic(fmt.Sprintf("Query %s has never been snapshot when IsAltered called", q.String()))
+	}
+	return q.String() != q.snapshot
+}
diff --git a/vendor/yunion.io/x/sqlchemy/table.go b/vendor/yunion.io/x/sqlchemy/table.go
index 6c95deb338..4b7fa6ad5b 100644
--- a/vendor/yunion.io/x/sqlchemy/table.go
+++ b/vendor/yunion.io/x/sqlchemy/table.go
@@ -19,6 +19,7 @@ import (
 	"reflect"
 	"strings"
 
+	"yunion.io/x/log"
 	"yunion.io/x/pkg/utils"
 )
 
@@ -119,7 +120,8 @@ func (tbl *STable) Field(name string, alias ...string) IQueryField {
 	name = utils.CamelSplit(name, "_")
 	spec := tbl.spec.ColumnSpec(name)
 	if spec == nil {
-		panic("column not found: " + name)
+		log.Warningf("column %s not found in table %s", name, tbl.spec.Name())
+		return nil
 	}
 	col := STableField{table: tbl, spec: spec}
 	if len(alias) > 0 {
diff --git a/vendor/yunion.io/x/sqlchemy/update.go b/vendor/yunion.io/x/sqlchemy/update.go
index 700210325b..a122da432a 100644
--- a/vendor/yunion.io/x/sqlchemy/update.go
+++ b/vendor/yunion.io/x/sqlchemy/update.go
@@ -105,7 +105,7 @@ func (us *SUpdateSession) saveUpdate(dt interface{}) (UpdateDiffs, error) {
 		nf, _ := fields.GetInterface(k)
 		if c.IsPrimary() {
 			if !gotypes.IsNil(of) && !c.IsZero(of) {
-				primaries[k] = of
+				primaries[k] = c.ConvertFromValue(of)
 			} else if c.IsText() {
 				primaries[k] = ""
 			} else {
@@ -113,12 +113,6 @@ func (us *SUpdateSession) saveUpdate(dt interface{}) (UpdateDiffs, error) {
 			}
 			continue
 		}
-		if !gotypes.IsNil(of) {
-			if c.IsPrimary() && !c.IsZero(of) { // skip update primary key
-				primaries[k] = of
-				continue
-			}
-		}
 		nc, ok := c.(*SIntegerColumn)
 		if ok && nc.IsAutoVersion {
 			versionFields = append(versionFields, k)