From 344cce1a3b6564f1839cdc34d26af26946e441bf Mon Sep 17 00:00:00 2001
From: shenglian zhou <slzhou@taosdata.com>
Date: Wed, 10 Nov 2021 08:50:07 +0800
Subject: [PATCH] support pow(min(col), 2)

---
 src/client/src/tscSQLParser.c | 1 -
 src/common/inc/texpr.h        | 2 +-
 src/common/src/texpr.c        | 2 ++
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 12f72ba43f..9b519c7e4e 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1886,7 +1886,6 @@ static int32_t handleAggregateExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_
   pSqlExpr->param[0].nType = TSDB_DATA_TYPE_BINARY;
 
 //    tbufCloseWriter(&bw); // TODO there is a memory leak
-  tExprTreeDestroy(pInfo->pExpr->pExpr, NULL);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/common/inc/texpr.h b/src/common/inc/texpr.h
index 29e7df6a29..4aaff98b17 100644
--- a/src/common/inc/texpr.h
+++ b/src/common/inc/texpr.h
@@ -115,7 +115,7 @@ typedef struct tExprNode {
     struct {
       int16_t functionId;
       uint8_t numChildren;
-      struct tExprNode** pChildren;
+      struct tExprNode **pChildren;
     } _func;
   };
   int16_t resultType;
diff --git a/src/common/src/texpr.c b/src/common/src/texpr.c
index 37244e208a..2176784aa3 100644
--- a/src/common/src/texpr.c
+++ b/src/common/src/texpr.c
@@ -956,6 +956,8 @@ tExprNode* exprdup(tExprNode* pNode) {
   }
 
   pCloned->nodeType = pNode->nodeType;
+  pCloned->resultType = pNode->resultType;
+  pCloned->resultBytes = pNode->resultBytes;
   return pCloned;
 }
 
-- 
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