%META:TOPICPARENT{name="VirtTipsAndTricksGuide"}%

---+Who Am I?

---+Why?

Identity is the root of many challenges that arise during system usage troubleshooting, especially in situation where fine-grained attribute-based access controls are in use. Thus, it imperative that you (the identity principal) possess knowledge about how to you are being identified to a Virtuoso instance. 

Basically, this is about Virtuoso's equivalent of the  "whoami" command on Unix and Linux.

---+What?

How to determine your Virtuoso SQL session identity, following a successful login.

---+How?

   1 SQL through, for instance, iSQL:
<verbatim>
SELECT get_user();
</verbatim>
   1 SPASQL (SPARQL-in-SQL) through, for instance, iSQL:
<verbatim>
SPARQL SELECT bif:get_user() {}; 
</verbatim>
   1 SPARQL through, for instance, the <code>/sparql</code> input form:
<verbatim>
SELECT bif:get_user() {}
</verbatim>


---++Related

   * [[VirtTipsAndTricksGuide][Virtuoso Tips and Tricks Collection]]