From 22e306c73767453e3bd40dbc4dbc4c38e9ca9ac2 Mon Sep 17 00:00:00 2001
From: wade zhang <95411902+gccgdb1234@users.noreply.github.com>
Date: Thu, 15 Sep 2022 17:38:06 +0800
Subject: [PATCH] Update 06-select.md

---
 docs/en/12-taos-sql/06-select.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/en/12-taos-sql/06-select.md b/docs/en/12-taos-sql/06-select.md
index 176a5488e1..118a248373 100644
--- a/docs/en/12-taos-sql/06-select.md
+++ b/docs/en/12-taos-sql/06-select.md
@@ -355,7 +355,7 @@ SELECT ... FROM (SELECT ... FROM ...) ...;
 - Compared to the non-nested query, the functionality that can be used in the outer query has the following restrictions:
   - Functions
     - If the result set returned by the inner query doesn't contain timestamp column, then functions relying on timestamp can't be used in the outer query, like INTERP,DERIVATIVE, IRATE, LAST_ROW, FIRST, LAST, TWA, STATEDURATION, TAIL, UNIQUE.
-    - If the result set returned by the inner query are not valid time series, then functions relying on time series can't be used in the outer query, like LEASTSQUARES, ELAPSED, INTERP, DERIVATIVE, IRATE, TWA, DIFF, STATECOUNT, STATEDURATION, CSUM, MAVG, TAIL, UNIQUE. 
+    - If the result set returned by the inner query are not sorted in order by timestamp, then functions relying on data ordered by timestamp can't be used in the outer query, like LEASTSQUARES, ELAPSED, INTERP, DERIVATIVE, IRATE, TWA, DIFF, STATECOUNT, STATEDURATION, CSUM, MAVG, TAIL, UNIQUE. 
     - Functions that need to scan the data twice can't be used in the outer query, like PERCENTILE.
 
 :::
-- 
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