[TS-575]<bug>(query): modify case

tests/pytest/query/queryLimit.py

@@ -215,9 +215,9 @@ class TDTestCase:
         sql = "select * from st where ts>='2017-07-14 10:40:10' and ts<'2017-07-22 18:40:10' order by ts desc limit 16;"
         tdSql.waitedQuery(sql, 16, WAITS)
         tdSql.checkData(15, 1, 720004)
-        sql = "select * from st where ts>='2017-07-14 10:40:10' and ts<'2017-07-22 18:40:10' order by ts desc limit 16 offset 2;"
+        sql = "select * from st where ts>='2017-07-14 10:40:10' and ts<'2017-07-22 18:40:10' order by ts desc limit 16 offset 3;"
         tdSql.waitedQuery(sql, 16, WAITS)
-        tdSql.checkData(15, 1, 720004)
+        tdSql.checkData(15, 1, 720003)
 
 #
 # add case with filename