The Postgres server can be restarted using the “/etc/init.d/postgresql restart” or “sudo systemctl restart postgresql” commands.
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How Does the CEILING() Function Work in PostgreSQL?
In Postgres, CEILING() is a built-in math function that accepts a numeric or double precision value and converts it into the nearest integer toward the positive infinity.
How to Install PostgreSQL on CentOS?
To install PostgreSQL on CentOS, execute the “sudo yum install postgresql-server postgresql-contrib” script.
How to Use CARDINALITY() Function in PostgreSQL?
In PostgreSQL, CARDINALITY() is an array function that counts the total number of array elements. The return type of the stated function is INT.
How to Restart PostgreSQL Server on Windows
In PostgreSQL, the “pg_ctl” command and “services manager” can be used to restart the Postgres server on the Windows operating system.
How to Lock or Unlock a PostgreSQL User
To lock a Postgres user, the “ALTER USER” statement can be used with the “NOLOGIN” clause. While a user can be unlocked by using the “ALTER USER” command with the “LOGIN” attribute.
How to Check if a User is Connected to the PostgreSQL Server or Not
In Postgres, to check the active users via the “pg_stat_activity”, use the “SELECT usename, datname, state FROM pg_stat_activity WHERE usename='user_name';” command.
How to Grant Permissions on all Tables to a PostgreSQL User
In PostgreSQL, the GRANT statement is utilized along with the “ON ALL TABLES” clause to assign permissions on all tables to single or multiple users.
How to Change the Table Owner in PostgreSQL
To change or modify the table’s owner in PostgreSQL, use the “ALTER TABLE tab_name OWNER TO new_owner_name;” command.
How to Grant All Privileges on Schema to User in PostgreSQL
In PostgreSQL, the “GRANT ALL” statement is utilized along with the “ON ALL TABLES IN SCHEMA” clause to assign permissions on the schema to single or multiple users.
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