diff --git a/app/community/rpc/internal/logic/helpers.go b/app/community/rpc/internal/logic/helpers.go
index d134634..09d672f 100644
--- a/app/community/rpc/internal/logic/helpers.go
+++ b/app/community/rpc/internal/logic/helpers.go
@@ -10,7 +10,7 @@ import (
 
 func toTextArray(s []string) types.TextArray {
 	if len(s) == 0 {
-		return types.TextArray{Valid: true}
+		return types.TextArray{Elements: []string{}, Valid: true}
 	}
 	return types.TextArray{
 		Elements: s,
diff --git a/pkg/types/TextArray.go b/pkg/types/TextArray.go
index d34707c..3bedd2e 100644
--- a/pkg/types/TextArray.go
+++ b/pkg/types/TextArray.go
@@ -13,6 +13,13 @@ type TextArray pgtype.Array[string]
 
 func (s *TextArray) Scan(src any) error {
 	logx.Infof("scan src=%+v", src)
+	if src == nil {
+		s.Elements = []string{}
+		s.Dims = nil
+		s.Valid = true
+		return nil
+	}
+
 	var strSrc string
 	switch v := src.(type) {
 	case string:
@@ -37,5 +44,8 @@ func (s *TextArray) Scan(src any) error {
 }
 
 func (s TextArray) Value() (driver.Value, error) {
+	if s.Elements == nil {
+		return []string{}, nil
+	}
 	return s.Elements, nil
 }