select from returns nothing on citus columnar storage

Question

i've create a table named tbl1 with USING columnar in citus then inserted dump file successfuly :

SELECT pg_total_relation_size('tbl1')
+--------------------------+
| pg_total_relation_size   |
|--------------------------|
| 479675424768             |
+--------------------------+

but while using query to select existing data , result is nothing or null

select max(field1) from tbl1; 
+--------+
| max    |
|--------|
| <null> |
+--------+

i even created citus extention before do top steps , but im wondering how does it happend and does not returns anything,