| --- |
| title: Connecting with psql |
| --- |
| |
| Depending on the default values used or the environment variables you have set, the following examples show how to access a database via `psql`: |
| |
| ``` bash |
| $ psql -d gpdatabase -h master_host -p 5432 -U `gpadmin` |
| ``` |
| |
| ``` bash |
| $ psql gpdatabase |
| ``` |
| |
| ``` bash |
| $ psql |
| ``` |
| |
| If a user-defined database has not yet been created, you can access the system by connecting to the `template1` database. For example: |
| |
| ``` bash |
| $ psql template1 |
| ``` |
| |
| After connecting to a database, `psql` provides a prompt with the name of the database to which `psql` is currently connected, followed by the string `=>` \(or `=#` if you are the database superuser\). For example: |
| |
| ``` sql |
| gpdatabase=> |
| ``` |
| |
| At the prompt, you may type in SQL commands. A SQL command must end with a `;` \(semicolon\) in order to be sent to the server and executed. For example: |
| |
| ``` sql |
| => SELECT * FROM mytable; |
| ``` |
