Inside psql, you always have one active database, where you are “into”. By default it’s the one you connect to in the first place. When you run:
psql postgresyou’ll connect to the postgres database.
To switch database, use the \connect command, or \c:
PostgreSQL will close the connection to the previous database you were connected to, and will connect to the new one you specified.
More database tutorials:
- The MongoDB basics tutorial
- How MongoDB is different from a SQL database
- Information systems, data and information
- Data models
- Introduction to the ER Data Model
- The Relational Model
- Relational Algebra
- Relational Databases
- What is a Database? And a DBMS?
- Introduction to SQL
- How to install PostgreSQL on macOS
- Do you always need a database for your app?
- How to install SQLite on macOS
- Introduction to PostgreSQL
- PostgreSQL User Permissions
- How to list all users in PostgreSQL
- How to switch database using PostgreSQL
- How to list all databases using PostgreSQL
- How to list tables in the current database using PostgreSQL
- How to install MySQL on macOS
- Creating a user on MySQL
- PostgreSQL vs MySQL, a comparison
- SQLite User Permissions
- MySQL User Permissions
- SQL, creating a table
- SQL, adding data to a table
- SQL, how to use SELECT
- SQL, Handling empty cells
- SQL, Unique and Primary keys
- SQL, how to update data
- SQL, how to update a table structure
- SQL, how to delete data and tables
- SQL Joins
- SQL Views
- How to insert multiple items at once in a MongoDB collection
- How to remove all items from a MongoDB collection