From b74766ab31383ef35ab9a49d79722681c76554b2 Mon Sep 17 00:00:00 2001
From: lihui <huili@taosdata.com>
Date: Wed, 27 Nov 2019 19:35:11 +0800
Subject: [PATCH] [TBASE-898]

---
 src/client/src/tscSQLParser.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index d963c8905d..ba465c28b9 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -2546,6 +2546,10 @@ int32_t setShowInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       }
     }
   }else if (type == SHOW_VNODES) {
+    if (NULL == pInfo->pDCLInfo) {
+      return invalidSqlErrMsg(pCmd, "No specified ip of dnode");
+    }
+
     // show vnodes may be ip addr of dnode in payload
     if (pInfo->pDCLInfo->nTokens > 0) {
       SSQLToken* pDnodeIp = &pInfo->pDCLInfo->a[0];
-- 
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