postgresql 9.1

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  1. Exit psql Command Line
    Type \q or \quit:This is the most common and straightforward way to exit psql.Simply type either \q or \quit followed by Enter
  2. Troubleshooting 'canceling statement due to conflict with recovery' in PostgreSQL Replicas (PostgreSQL 9.1+)
    This error arises in PostgreSQL setups that involve a primary server (master) and one or more secondary servers (replicas or slaves). These secondary servers are used for various purposes
  3. Adding a Column Only if It Doesn't Exist in PostgreSQL (Pre-9.4)
    Using Information Schema:This approach involves checking if the column already exists in the table and then adding it only if it's missing
  4. How to Recover from a Lost PostgreSQL Password
    Important notes:Be cautious when modifying the pg_hba. conf file, as weakening authentication methods can expose your database to security risks