From 203f5c7078645e990b7f2d015dcf84543be3959f Mon Sep 17 00:00:00 2001
From: wangmm0220 <wangmm0220@gmail.com>
Date: Mon, 16 Aug 2021 18:14:21 +0800
Subject: [PATCH] [TD-6046]<fix> fix ts,derivative() output error for
 top/bottom/diff/derivative

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

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index caa6620b73..dfaf60d1d7 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -2024,7 +2024,7 @@ static SQLFunctionCtx* createSQLFunctionCtx(SQueryRuntimeEnv* pRuntimeEnv, SExpr
 
     if (functionId == TSDB_FUNC_TOP || functionId == TSDB_FUNC_BOTTOM || functionId == TSDB_FUNC_DIFF) {
       int32_t f = pExpr[0].base.functionId;
-      assert(f == TSDB_FUNC_TS || f == TSDB_FUNC_TS_DUMMY);
+      assert(f == TSDB_FUNC_TS || f == TSDB_FUNC_TS_DUMMY || f == TSDB_FUNC_PRJ);
 
       pCtx->param[2].i64 = pQueryAttr->order.order;
       pCtx->param[2].nType = TSDB_DATA_TYPE_BIGINT;
-- 
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