From 00ecc593bd7dccd0ddf2a85c094f275ddcff5ce1 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Mon, 26 Oct 2020 18:37:32 +0800
Subject: [PATCH] [td-225] fix bug found by regression test.

---
 src/client/src/tscUtil.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index f99adfffea..07bd9d1b07 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1121,6 +1121,8 @@ int32_t tscSqlExprCopy(SArray* dst, const SArray* src, uint64_t uid, bool deepco
         }
 
         *p1 = *pExpr;
+        memset(p1->param, 0, sizeof(tVariant) * tListLen(p1->param));
+
         for (int32_t j = 0; j < pExpr->numOfParams; ++j) {
           tVariantAssign(&p1->param[j], &pExpr->param[j]);
         }
-- 
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