How to check current database in psql?
Listing databases

A single Postgres server process can manage multiple databases at the same time. Each database is stored as a separate set of files in its own directory within the server's data directory. To view all of the defined databases on the server you can use the \list meta-command or its shortcut \l .To use the \l command, connect to the Postgres database server using the psql command-line interface. Once you are connected, type \l and press Enter. This will display a list of all databases on the server.Assume your database is called db and you are running psql. First, choose ( \c ) the database to work with, then display ( \d ) all its tables ( \t ). psql db -U postgres; You can also use the command \d in psql, instead of \dt , to show all tables, views, sequences, roles, and other database objects.

How to open database in PostgreSQL : How to select/access a database in PostgreSQL

  1. Step 1: Open psql. Firstly, type “psql” in the Windows search bar and open it:
  2. Step 2: List of databases.
  3. Step 3: Select database.
  4. Step1: Open cmd.
  5. Step 2: Access Postgres.
  6. Step 3: Select database.
  7. Step 1: Open pgAdmin.
  8. Step 2: Select Database.

How do I view current database in SQL

To find out which database is currently selected, use the following query: SELECT DATABASE(); In dbForge Studio the selected database will be shown in the menu ribbon. You can easily switch between the databases using the dropdown.

How do I find the current database in SQL : You can use the 'dbname' option to retrieve the name of the current database.

3 Ways to list all schemas in PostgreSQL

  1. Using SQL Query. We can list all PostgreSQL schemas using the (ANSI) standard INFORMATION_SCHEMA: SELECT schema_name FROM information_schema.schemata;
  2. Using psql. If you are using psql, you can list all schemas simply by using the following command: \dn.
  3. With ERBuilder Data Modeler.


You can use the “\dn+” command to get the schema's list with more details like access privileges and description. You can also use the “\dn” or “\dn+” command, followed by the schema name to get the information of a specific schema.

How do I list all tables in SQL

Show all tables in SQL Server database with dbForge Studio for SQL Server

  1. Select the desired database in the left pane.
  2. Expand the selected database to reveal its contents.
  3. Expand the Tables folder to display all tables within the database.

To change a default schema at the user/role level, the “ALTER USER” or “ALTER ROLE” command is used with the “SET SEARCH_PATH” clause: ALTER ROLE|USER role_name SET search_path TO schema_name; Specify the user name and schema name of your choice in place of “role_name” and “schema_name”.Connect to PostgreSQL Database from Terminal

The -u (user) option causes sudo to run the specified command as a user other than root, specifically the postgres user. As with the previous method, you can now work on databases by executing queries interactively. Enter \q to exit the prompt.

Open the psql command-line tool:

  1. In the Windows Command Prompt, run the command: psql -U userName.
  2. Enter your password when prompted.

How to see database in SQL command line : To view a list of databases on an instance of SQL Server

  1. In Object Explorer, connect to an instance of the SQL Server Database Engine, and then expand that instance.
  2. To see a list of all databases on the instance, expand Databases.

How to check db in SQL Server : How to Check SQL Server Database Size

  1. Launch Microsoft SQL Server Management Studio (SSMS).
  2. On the File menu, click “Connect Object Explorer”.
  3. Click “Connect”.
  4. Upon connection, click “New Query” and enter one of the following as the query:
  5. Click “Execute”.
  6. Review the output, as illustrated below.

How to get current database name in postgresql

The function current_database() returns the name of the current database: SELECT current_database(); It's an SQL function, so you must call it as part of an SQL statement.

MySQL DATABASE() Function

The DATABASE() function returns the name of the current database. If there is no current database, this function returns NULL or "".If the schema view is not showing the schema behind the worksheet, double-click the tab on the upper right of the worksheet object. The worksheet view shows the following information: All tables in the worksheet, and the relationships between these tables. Source columns for all columns of a worksheet.

What is schema in psql : Schema is a collection of logical structures of data. In PostgreSQL, schema is a named collection of tables, views, functions, constraints, indexes, sequences etc. PostgreSQL supports having multiple schemas in a single database there by letting you namespace different features into different schemas.