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192.168.10.100:5432 pgdbadmin@maximus_db=# select * from
pg_replication_slots; slot_name | plugin | slot_type | datoid | database | active | active_pid | xmin | catalog_xmin | restart_lsn | confirmed_flush_lsn .
postgres=# SELECT redo_lsn, slot_name,restart_lsn, round((redo_lsn-restart_lsn) / 1024 / 1024 / 1024, 2) AS GB_behind FROM pg_control_checkpoint(), pg_replication_slots; redo_lsn | slot_name | restart_lsn | gb_behind .
CREATE FUNCTION clean_emp() RETURNS void AS ' DELETE FROM emp WHERE salary < 0; ' LANGUAGE SQL; SELECT clean_emp(); clean_emp ...