From 25b47131c83a9b214f363491b852562dcc66303e Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Mon, 16 Nov 2020 18:52:32 +0800
Subject: [PATCH] [TD-225]

---
 src/client/src/tscLocalMerge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client/src/tscLocalMerge.c b/src/client/src/tscLocalMerge.c
index 77162a64b0..4a894f8008 100644
--- a/src/client/src/tscLocalMerge.c
+++ b/src/client/src/tscLocalMerge.c
@@ -570,7 +570,7 @@ static int32_t createOrderDescriptor(tOrderDescriptor **pOrderDesc, SSqlCmd *pCm
   if (numOfGroupByCols > 0) {
 
     if (pQueryInfo->groupbyExpr.numOfGroupCols > 0) {
-      int32_t numOfInternalOutput = tscSqlExprNumOfExprs(pQueryInfo);
+      int32_t numOfInternalOutput = (int32_t) tscSqlExprNumOfExprs(pQueryInfo);
       int32_t startCols = numOfInternalOutput - pQueryInfo->groupbyExpr.numOfGroupCols;
 
       // the last "pQueryInfo->groupbyExpr.numOfGroupCols" columns are order-by columns