1 files changed, 1 insertions, 0 deletions
diff --git a/src/expr.c b/src/expr.c
index 07b6dfcef..6ae6dc331 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -4361,6 +4361,7 @@ expr_code_doover:
     assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
     op = pExpr->op;
   }
+  assert( op!=TK_ORDER );
   switch( op ){
     case TK_AGG_COLUMN: {
       AggInfo *pAggInfo = pExpr->pAggInfo;