SQL for getting all users in a database

Fetch All Users in a Database

Using the SYSTEM_USERS View

SELECT
  *
FROM
  INFORMATION_SCHEMA.SYSTEM_USERS;

Explanation:

  • This query uses the SYSTEM_USERS view, which contains information about all users in the database.
  • The * selects all columns, including the user name, user ID, and other details.

Filtering Results

SELECT
  *
FROM
  INFORMATION_SCHEMA.SYSTEM_USERS
WHERE
  user_name LIKE '%user%';

Explanation:

  • This query adds a WHERE clause to filter the results based on the user name.
  • The LIKE '%user%' clause searches for user names that contain the substring "user".

Sorting Results

SELECT
  *
FROM
  INFORMATION_SCHEMA.SYSTEM_USERS
ORDER BY
  user_name ASC;

Explanation:

  • This query adds an ORDER BY clause to sort the results by the user name in ascending order (alphabetical).
  • You can change ASC to DESC for descending order.

Paging Results

SELECT
  *
FROM
  INFORMATION_SCHEMA.SYSTEM_USERS
ORDER BY
  user_name ASC
OFFSET 10 ROWS
FETCH NEXT 20 ROWS ONLY;

Explanation:

  • This query uses the OFFSET and FETCH NEXT clauses to retrieve only a specific range of results.
  • The OFFSET 10 ROWS skips the first 10 rows.
  • The FETCH NEXT 20 ROWS ONLY retrieves the next 20 rows after the offset.

Implementation

  1. Connect to the database.
  2. Execute the query using your preferred SQL client.
  3. Parse the results to extract the user information.
  4. Use the information to perform subsequent actions, such as displaying it to the user or managing permissions.