PostgreSQL – How to Check if User is Superuser

ByAdmin October 30, 2023October 30, 2023

The is_superuser configuration setting or attribute determines whether a user has superuser privileges or not. Superusers have the highest level of access and control over a PostgreSQL database cluster, including the ability to perform critical administrative functions.

The is_superuser setting is a boolean attribute associated with database roles (users). When a user is designated as a superuser, their is_superuser attribute is set to true, indicating that they have the highest level of privileges.

To check whether currently logged in user has superuser privileges, you can run the following SQL query:

You can use the below query to check if the user has superuser privileges for any user:

SELECT rolname, rolsuper FROM pg_roles WHERE rolname = 'your_username';

Superuser privileges in PostgreSQL come with a high level of responsibility, and you should exercise caution when assigning these privileges to users. Superusers have the authority to perform potentially destructive actions, so it’s important to limit superuser access to trusted individuals who need these privileges for administrative tasks.

How-To Guides

PostgreSQL – How to Drop a Sequence

ByAdmin September 6, 2023September 6, 2023

You can drop a sequence using the DROP SEQUENCE command. Here’s the basic syntax to drop a sequence: DROP SEQUENCE [ IF EXISTS ] sequence_name [, …] [ CASCADE | RESTRICT ]; Here are some examples of using the DROP SEQUENCE command: Drop a sequence without checking for dependencies: DROP SEQUENCE my_sequence; Drop a sequence…

How-To Guides

PostgreSQL – How to Rename a Constraint

ByAdmin September 14, 2023September 14, 2023

You can rename a constraint in PostgreSQL database using the ALTER TABLE statement. Renaming a constraint is useful when you want to give it a more meaningful or descriptive name or if you need to change its name for any other reason. Here’s the basic syntax for renaming a constraint: ALTER TABLE table_name RENAME CONSTRAINT…

How-To Guides

PostgreSQL -How to Drop a NOT NULL Constraint

ByAdmin September 8, 2023September 8, 2023

To drop a NOT NULL constraint from an existing column in a PostgreSQL table, you can use the ALTER TABLE statement with the ALTER COLUMN clause. Here’s the basic syntax: ALTER TABLE table_name ALTER COLUMN column_name DROP NOT NULL; where table_name is the name of the table containing the column and column_name is the name…

How-To Guides

PostgreSQL – How to Convert String to Date

ByAdmin August 31, 2023August 31, 2023

You can convert a string to a date using the TO_DATE function in PostgreSQL. This function allows you to specify the input string, the format of the string, and it will return a date accordingly. The general syntax of the TO_DATE function is as follows: TO_DATE(input_string, format_string) Here’s an example of using SELECT TO_DATE(‘2023-08-31’, ‘YYYY-MM-DD’);…

How-To Guides

PostgreSQL – How to Change a User’s Password

ByAdmin September 5, 2023September 5, 2023

To change a user’s password in PostgreSQL, you can use the ALTER USER statement. Here’s how you can change a user’s password: Connect to PostgreSQL: You need to connect to your PostgreSQL server using a user account with superuser or administrative privileges, as only superusers can change the passwords of other users. Change the Password:To…

How-To Guides

PostgreSQL – How to Create a User

ByAdmin August 30, 2023August 30, 2023

To create a new user in PostgreSQL, you can use the CREATE USER SQL command. Below is the basic syntax: CREATE USER username [WITH PASSWORD ‘password’]; where username is the desired username for the new user, and [WITH PASSWORD ‘password’] is optional. If you include the password, the user will be created with that password….

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