diff --git a/session_cols.go b/session_cols.go
index e6dd9a65..1558074f 100644
--- a/session_cols.go
+++ b/session_cols.go
@@ -106,12 +106,6 @@ func (session *Session) Cols(columns ...string) *Session {
 	return session
 }
 
-// RawCols generate raw "col1, col2" statement
-func (session *Session) RawCols(columns ...string) *Session {
-	session.statement.ColumnStr = strings.Join(columns, ", ")
-	return session
-}
-
 // AllCols ask all columns
 func (session *Session) AllCols() *Session {
 	session.statement.AllCols()