diff --git a/database/gdb_dao_interface.go b/database/gdb_dao_interface.go
index 6dbc16f..14bca3d 100644
--- a/database/gdb_dao_interface.go
+++ b/database/gdb_dao_interface.go
@@ -7,7 +7,6 @@ import (
 type IDao interface {
 	DB() DB
 	TableName() string
-	Columns() interface{}
 	Group() string
 	Ctx(ctx context.Context) *Model
 	Transaction(ctx context.Context, f func(ctx context.Context, tx TX) error) (err error)