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session_id

1. SESSION_ID Function​

The SESSION_ID function in H2 database is used to retrieve the unique identifier of the current session.

2. Syntax​

The syntax for the SESSION_ID function in H2 database is as follows:

SESSION_ID()

Arguments​

  • None. The SESSION_ID function does not take any arguments.

Return​

  • The SESSION_ID function returns a string representing the unique identifier of the current session.

3. Notes​

  • The SESSION_ID function in H2 database provides a unique identifier for each session. This identifier can be used to differentiate between multiple concurrent sessions.
  • The returned identifier is a string, typically in the format of a UUID (Universally Unique Identifier).
  • The SESSION_ID function does not require any input parameters and can be used directly in queries or in other parts of the application.

4. Examples​

Here are a few examples demonstrating the usage of the SESSION_ID function in H2 database:

Example 1 - Retrieving the session ID:​

SELECT SESSION_ID() AS session_id;

Output:

session_id
------------------------------------
c7f153e7-4f1b-4e88-b4b4-123456789abc

Example 2 - Using the session ID in a query:​

SELECT id, name
FROM users
WHERE session_id = SESSION_ID();

Output:

id | name
---+------
1  | John
2  | Jane
  • None. The SESSION_ID function is unique to H2 database and does not have any related functions in other databases.