From 2ed28bf703dd3d620e8c986a9f3ec26d8ac8c5ab Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Tue, 20 Oct 2020 13:49:35 +0800
Subject: [PATCH] [td-1752] add test cases.

---
 tests/script/general/parser/constCol.sim | 28 ++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/tests/script/general/parser/constCol.sim b/tests/script/general/parser/constCol.sim
index 7232851ae9..69f4111700 100644
--- a/tests/script/general/parser/constCol.sim
+++ b/tests/script/general/parser/constCol.sim
@@ -357,4 +357,32 @@ print ========================> td-1756
 sql_error select * from t1 where ts>now-1y
 sql_error select * from t1 where ts>now-1n
 
+print ========================> td-1752
+sql select * from st2 where t2 < 200 and t2 is not null;
+if $rows != 1 then
+  return -1
+endi
+
+if $data00 != @19-12-09 16:27:35.000@ then
+  return -1
+endi
+
+if $data01 != 2 then
+  return -1
+endi
+
+if $data02 != 1 then
+  return -1
+endi
+
+sql select * from st2 where t2 > 200 or t2 is null;
+if $rows != 0 then
+  return -1
+endi
+
+sql select * from st2 where t2 < 200 and t2 is null;
+if $rows != 0 then
+  return -1
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-- 
GitLab