Pull query not working

My question is similar to this : KSQL Query to consume after certain time from insertion
I am looking exactly for the same…
ksqldb-server:0.18.0 , ksqldb-cli:0.18.0…

There is no error on ksql cli, but I am not able to see any data in my required query after half and hour.

Requirement :
My actually requirement is that some clients will publish records/messages to my ABC topic where functionality is as follows I need to consume and wait for half an hour and then Insert them into postgress sql DB. So I thought of using Ksql in order to remove the steps of files/jobs/storage so that the message/records can stay in topic for 30 mins and can be inserted directly into postgress DB.