diff --git a/orm/db.go b/orm/db.go
index 7d4833e2..84d1b9ae 100644
--- a/orm/db.go
+++ b/orm/db.go
@@ -1304,6 +1304,10 @@ func (d *dbBase) GetColumns(db dbQuerier, table string) (map[string][3]string, e
 	return columns, nil
 }
 
+func (d *dbBase) OperatorSql(operator string) string {
+	panic(ErrNotImplement)
+}
+
 func (d *dbBase) ShowTablesQuery() string {
 	panic(ErrNotImplement)
 }
diff --git a/orm/db_oracle.go b/orm/db_oracle.go
index 3769e07c..ca1715ef 100644
--- a/orm/db_oracle.go
+++ b/orm/db_oracle.go
@@ -6,10 +6,6 @@ type dbBaseOracle struct {
 
 var _ dbBaser = new(dbBaseOracle)
 
-func (d *dbBase) OperatorSql(operator string) string {
-	return ""
-}
-
 func newdbBaseOracle() dbBaser {
 	b := new(dbBaseOracle)
 	b.ins = b