inc code coverage

tests/pytest/functions/function_operations.py

@@ -95,7 +95,8 @@ class TDTestCase:
         for i in col_list :
             for j in col_list :
                 for k in op_list :
-                    sql = " select %s %s %s from test1 " % ( i , k , j )
+                    for l in [' order by ts' , ' order by ts desc' ]:
+                        sql = " select %s %s %s from test1 %s" % ( i , k , j , l )
                         if i in err_list or j in err_list:
                             tdSql.error(sql)
                         else: