fix: use oid replace relfilenode in check column type (#129)

migrator.go

@@ -476,7 +476,7 @@ func (m Migrator) ColumnTypes(value interface{}) (columnTypes []gorm.ColumnType,
 		// check column type
 		{
 			dataTypeRows, err := m.DB.Raw(`SELECT a.attname as column_name, format_type(a.atttypid, a.atttypmod) AS data_type
-		FROM pg_attribute a JOIN pg_class b ON a.attrelid = b.relfilenode AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace WHERE nspname = ?)
+		FROM pg_attribute a JOIN pg_class b ON a.attrelid = b.oid AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace WHERE nspname = ?)
 		WHERE a.attnum > 0 -- hide internal columns
 		AND NOT a.attisdropped -- hide deleted columns
 		AND b.relname = ?`, currentSchema, table).Rows()