diff --git a/store/db/mysql/memo_filter.go b/store/db/mysql/memo_filter.go
index e32ab41d..6622c0f5 100644
--- a/store/db/mysql/memo_filter.go
+++ b/store/db/mysql/memo_filter.go
@@ -102,6 +102,25 @@ func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
 					return err
 				}
 				ctx.Args = append(ctx.Args, timestamp.Unix())
+			} else if identifier == "visibility" || identifier == "content" {
+				if operator != "=" && operator != "!=" {
+					return errors.Errorf("invalid operator for %s", v.CallExpr.Function)
+				}
+				valueStr, ok := value.(string)
+				if !ok {
+					return errors.New("invalid string value")
+				}
+
+				var factor string
+				if identifier == "visibility" {
+					factor = "`memo`.`visibility`"
+				} else if identifier == "content" {
+					factor = "`memo`.`content`"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("%s %s ?", factor, operator)); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, valueStr)
 			}
 		case "@in":
 			if len(v.CallExpr.Args) != 2 {
diff --git a/store/db/postgres/memo_filter.go b/store/db/postgres/memo_filter.go
index 4e6608bb..9096dab7 100644
--- a/store/db/postgres/memo_filter.go
+++ b/store/db/postgres/memo_filter.go
@@ -59,7 +59,7 @@ func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
 			if err != nil {
 				return err
 			}
-			if !slices.Contains([]string{"create_time", "update_time"}, identifier) {
+			if !slices.Contains([]string{"create_time", "update_time", "visibility", "content"}, identifier) {
 				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
 			}
 			value, err := filter.GetConstValue(v.CallExpr.Args[1])
@@ -102,6 +102,25 @@ func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
 					return err
 				}
 				ctx.Args = append(ctx.Args, timestamp.Unix())
+			} else if identifier == "visibility" || identifier == "content" {
+				if operator != "=" && operator != "!=" {
+					return errors.Errorf("invalid operator for %s", v.CallExpr.Function)
+				}
+				valueStr, ok := value.(string)
+				if !ok {
+					return errors.New("invalid string value")
+				}
+
+				var factor string
+				if identifier == "visibility" {
+					factor = "memo.visibility"
+				} else if identifier == "content" {
+					factor = "memo.content"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("%s %s %s", factor, operator, placeholder(len(ctx.Args)+ctx.ArgsOffset+1))); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, valueStr)
 			}
 		case "@in":
 			if len(v.CallExpr.Args) != 2 {
diff --git a/store/db/sqlite/memo_filter.go b/store/db/sqlite/memo_filter.go
index 3103a1ed..496b759b 100644
--- a/store/db/sqlite/memo_filter.go
+++ b/store/db/sqlite/memo_filter.go
@@ -59,7 +59,7 @@ func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
 			if err != nil {
 				return err
 			}
-			if !slices.Contains([]string{"create_time", "update_time"}, identifier) {
+			if !slices.Contains([]string{"create_time", "update_time", "visibility", "content"}, identifier) {
 				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
 			}
 			value, err := filter.GetConstValue(v.CallExpr.Args[1])
@@ -102,6 +102,25 @@ func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
 					return err
 				}
 				ctx.Args = append(ctx.Args, timestamp.Unix())
+			} else if identifier == "visibility" || identifier == "content" {
+				if operator != "=" && operator != "!=" {
+					return errors.Errorf("invalid operator for %s", v.CallExpr.Function)
+				}
+				valueStr, ok := value.(string)
+				if !ok {
+					return errors.New("invalid string value")
+				}
+
+				var factor string
+				if identifier == "visibility" {
+					factor = "`memo`.`visibility`"
+				} else if identifier == "content" {
+					factor = "`memo`.`content`"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("%s %s ?", factor, operator)); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, valueStr)
 			}
 		case "@in":
 			if len(v.CallExpr.Args) != 2 {