Postgres row expiration

CREATE TABLE expire_table (
    timestamp timestamp NOT NULL DEFAULT NOW(),
    name TEXT NOT NULL
);

INSERT INTO expire_table (name) VALUES ('a');
INSERT INTO expire_table (name) VALUES ('b');
INSERT INTO expire_table (name) VALUES ('c');

select * from expire_table;
         timestamp          | name 
----------------------------+------
 2014-09-26 15:33:43.243356 | a
 2014-09-26 15:33:45.222202 | b
 2014-09-26 15:33:47.347131 | c
(3 rows)

CREATE FUNCTION expire_table_delete_old_rows() RETURNS trigger
    LANGUAGE plpgsql
    AS $$
BEGIN
  DELETE FROM expire_table WHERE timestamp < NOW() - INTERVAL '1 minute';
  RETURN NEW;
END;
$$;

CREATE TRIGGER expire_table_delete_old_rows_trigger
    AFTER INSERT ON expire_table
    EXECUTE PROCEDURE expire_table_delete_old_rows();

INSERT INTO expire_table (name) VALUES ('d');

select * from expire_table;
         timestamp          | name 
----------------------------+------
 2014-09-26 15:36:56.132596 | d
(1 row)

Source: stackoverflow.com

Similar codes

3 votes162 views1 answer
Start mysql server linux terminal
SQL
36 votes179 views6 answers
Rename table sql
SQL
4 votes214 views1 answer
How to check last gather stats on table in oracle
SQL
0 vote164 views1 answer
Get records in sql according to month name and count
SQL
0 vote175 views1 answer
How to take sum of column with same id in "JPQL?"
SQL
0 vote170 views1 answer
Postgres where
SQL
1 vote188 views2 answers
How to install mysql workbench in ubuntu 20.04
SQL
1 vote171 views1 answer
Oracle db create new schema
SQL
0 vote164 views1 answer
SQL SELECT-Klausel
SQL
1 vote190 views1 answer
Raw query must include primary key
SQL