[TD-14342]<fix> fix error if nchar condition in subquery like "select * from...

[TD-14342]<fix> fix error if nchar condition in subquery like "select * from (select * from table) where nchar = '0'"

tests/pytest/query/nestedQuery/nestedQuery_datacheck.py

@@ -621,6 +621,9 @@ class TDTestCase:
             tdSql.checkRows(100)
             datacheck = self.stable_join_checkall_100(sql)
 
+            # for TD-14342
+            sql = "select  * from  ( select  * from stable_1 ) where t_nchar like 'nchar%' or t_nchar = '0'"
+            datacheck = self.stable1_checkall_0(sql)
 
         endTime = time.time()
         print("total time %ds" % (endTime - startTime))