diff --git a/kernel/av/attribute_view.go b/kernel/av/av.go
similarity index 98%
rename from kernel/av/attribute_view.go
rename to kernel/av/av.go
index 7b85ffcca..5ef3560d8 100644
--- a/kernel/av/attribute_view.go
+++ b/kernel/av/av.go
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-// Package av 是属性视图相关的实现。
+// Package av 包含了属性视图（Attribute View）相关的实现。
 package av
 
 import (
diff --git a/kernel/av/column.go b/kernel/av/column.go
index 3eb5b47a1..08b9fd37b 100644
--- a/kernel/av/column.go
+++ b/kernel/av/column.go
@@ -47,3 +47,10 @@ func (c *BaseColumn) Name() string {
 func (c *BaseColumn) Type() string {
 	return c.BaseType
 }
+
+// ColumnValueResolver 描述了属性视图的列值解析器。
+type ColumnValueResolver interface {
+
+	// Resolve 用于解析列值。
+	Resolve() string
+}
diff --git a/kernel/av/column_relation.go b/kernel/av/column_relation.go
index d7696c42d..73c076085 100644
--- a/kernel/av/column_relation.go
+++ b/kernel/av/column_relation.go
@@ -20,8 +20,3 @@ type ColumnRelation struct {
 	*BaseColumn
 	AttributeViewID string `json:"attributeViewId"` // 关联的属性视图 ID
 }
-
-type AttributeViewColumnRollup struct {
-	*BaseColumn
-	RelationID string `json:"relationId"` // 目标关联列 ID
-}
diff --git a/kernel/av/column_rollup.go b/kernel/av/column_rollup.go
new file mode 100644
index 000000000..a2eac26b2
--- /dev/null
+++ b/kernel/av/column_rollup.go
@@ -0,0 +1,22 @@
+// SiYuan - Build Your Eternal Digital Garden
+// Copyright (c) 2020-present, b3log.org
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package av
+
+type ColumnRollup struct {
+	*BaseColumn
+	RelationColumnID string `json:"relationColumnId"` // 目标关联列 ID
+}