--
-- Test polar csn function
--
create extension polar_csn;
create table test(a int);
begin;
insert into test values(1);
select txid_csn(txid_current());
 txid_csn 
----------
        0
(1 row)

commit;
select txid_snapshot_csn(txid_current_snapshot()) > 0;
 ?column? 
----------
 t
(1 row)

drop table test;
drop extension polar_csn;