pg_sql

postgress_notes

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Start on mac
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brew services start postgresql
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psql -d postgres
CREATE ROLE postgres PASSWORD 'password' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;
CREATE ROLE root PASSWORD 'admin' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;
pg_restore -U root  -d database_name next.sql
psql -l
psql -U postgres -W
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command line useage
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psql -d postgres -U root -W
create database MyDB;
Ctrl+D
psql -d integration -U root -w

__________Remove_lock_in_postgres__________
SELECT * FROM pg_stat_activity order by query;
  
SELECT pg_cancel_backend('28908'); -- 28908
SELECT pg_cancel_backend('28966'); -- 28966
SELECT pg_cancel_backend('25945'); -- 28966

select count(*) from core_login;

____ DB Back up _postgress ____
pg_dump -U postgres -d student_db -h 192.1.2.1 -p 5432 > db_backup.sql 
____ DB Restore _postgress ____
psql -U root -d student_db -h localhost < db_backup.sql 


SELECT usename,client_hostname, client_addr, pid, now() - pg_stat_activity.query_start AS duration, query, state FROM pg_stat_activity WHERE (now() - pg_stat_activity.query_start) > interval '10 minutes';

Ohmysh
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vi ~/.zshrc
export PATH=$HOME/bin:/usr/local/bin:$PATH
export PATH=/usr/local/Cellar/postgresql@9.4/9.4.25/bin:$PATH