diff --git a/common/pkgs/db2/union_serializer.go b/common/pkgs/db2/union_serializer.go
new file mode 100644
index 0000000..8c0183c
--- /dev/null
+++ b/common/pkgs/db2/union_serializer.go
@@ -0,0 +1,44 @@
+package db2
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+
+	"gitlink.org.cn/cloudream/common/utils/serder"
+	"gorm.io/gorm/schema"
+)
+
+type UnionSerializer struct {
+}
+
+func (UnionSerializer) Scan(ctx context.Context, field *schema.Field, dst reflect.Value, dbValue interface{}) error {
+	fieldValue := reflect.New(field.FieldType)
+	if dbValue != nil {
+		var data []byte
+		switch v := dbValue.(type) {
+		case []byte:
+			data = v
+		case string:
+			data = []byte(v)
+		default:
+			return fmt.Errorf("failed to unmarshal JSONB value: %#v", dbValue)
+		}
+
+		err := serder.JSONToObjectExRaw(data, fieldValue.Interface())
+		if err != nil {
+			return err
+		}
+	}
+
+	field.ReflectValueOf(ctx, dst).Set(fieldValue.Elem())
+	return nil
+}
+
+func (UnionSerializer) Value(ctx context.Context, field *schema.Field, dst reflect.Value, fieldValue interface{}) (interface{}, error) {
+	return serder.ObjectToJSONEx(fieldValue)
+}
+
+func init() {
+	schema.RegisterSerializer("union", UnionSerializer{})
+}
diff --git a/go.mod b/go.mod
index e7afb70..fa5e0d1 100644
--- a/go.mod
+++ b/go.mod
@@ -22,6 +22,12 @@ require (
 	google.golang.org/protobuf v1.31.0
 )
 
+require (
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	gorm.io/gorm v1.25.12 // indirect
+)
+
 require (
 	github.com/antonfisher/nested-logrus-formatter v1.3.1 // indirect
 	github.com/benbjohnson/clock v1.3.0 // indirect
@@ -92,9 +98,9 @@ require (
 	golang.org/x/crypto v0.9.0 // indirect
 	golang.org/x/exp v0.0.0-20230519143937-03e91628a987 // indirect
 	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/sync v0.1.0
+	golang.org/x/sync v0.8.0
 	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
 	google.golang.org/genproto v0.0.0-20230526161137-0005af68ea54 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20230525234035-dd9d682886f9 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 // indirect
diff --git a/go.sum b/go.sum
index 66516ef..0347a95 100644
--- a/go.sum
+++ b/go.sum
@@ -77,6 +77,10 @@ github.com/ipfs/go-ipfs-api v0.7.0 h1:CMBNCUl0b45coC+lQCXEVpMhwoqjiaCwUIrM+coYW2
 github.com/ipfs/go-ipfs-api v0.7.0/go.mod h1:AIxsTNB0+ZhkqIfTZpdZ0VR/cpX5zrXjATa3prSay3g=
 github.com/jedib0t/go-pretty/v6 v6.4.7 h1:lwiTJr1DEkAgzljsUsORmWsVn5MQjt1BPJdPCtJ6KXE=
 github.com/jedib0t/go-pretty/v6 v6.4.7/go.mod h1:Ndk3ase2CkQbXLLNf5QDHoYb6J9WtVfmHZu9n8rk2xs=
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
@@ -219,6 +223,8 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -232,6 +238,8 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
@@ -258,6 +266,8 @@ gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/gorm v1.25.12 h1:I0u8i2hWQItBq1WfE0o2+WuL9+8L21K9e2HHSTE/0f8=
+gorm.io/gorm v1.25.12/go.mod h1:xh7N7RHfYlNc5EmcI/El95gXusucDrQnHXe0+CgWcLQ=
 lukechampine.com/blake3 v1.1.7 h1:GgRMhmdsuK8+ii6UZFDL8Nb+VyMwadAgcJyfYHxG6n0=
 lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=