Question

I am not getting a clue to:

1. simply login to postgreSQL
2. Create a database
3. Add a table
4. Insert a record
5. Delete , update etc

These things are normally very very easy using mysql . Can someone help me setup following alternative for postgresql

a) Reset default password — Very Clean description ,
I do not find same level of clarity for PostgreSQL
(Any documentation link is highly appreciated)

b) We know the superuser for mysql is “root” what is the same for PostgreSQL

c) from command line how to ( PostgreSQL ones ?):

 mysql -uroot -proot  
   create database testdb; 
   use testdb;
   create table test(id int(11) auto_increment, name varchar(20), primary key(id));
   insert into test(name) values("testing one"),("testing two"),("testing three"),("testing four");
   select * from test;
   update test set name=concat(name,now()) where id =3;
   delete from test where id =4;
   drop table if exists test;
   drop database if exists testdb;

EDIT MAC OS
# Default password reset

sudo mate /Library/PostgreSQL/9.2/data/pg_hba.conf

replaced (md5 with trust)

# "local" is for Unix domain socket connections only
local   all             all                                     md5
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

with

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust

save

executed the Reload Configuration.app

 login to postgresql without password : 
  $ psql -U postgres
  postgres# ALTER USER postgres WITH PASSWORD 'new password';
  \q  

-revert back all the changes in pg_hba.conf (replace trust with md5) and save

-reload configuration

Now I can login to postgresql with new password

psql -U postgres

Password for user postgres:[my new password]

Answer 1

To login:

psql -d postgres_dbname -U postgres

Create Database:

create database  testuser;

\c testuser;  /*use testuse as mysql*/

Create Table:

create table employee (Name char(20));

Insert :

 insert into employee VALUES ('XAS');

Update Link

Delete Link

Reset Password : See Here &
See Here Too