Oracle Expressions

From: NHM <Nuno.GodinhoMatos_at_gmail.com>
Date: Wed, 22 Oct 2008 07:31:05 -0700 (PDT)
Message-ID: <e0b91d04-d21a-4cb2-b0fe-55badcaea926@v15g2000hsa.googlegroups.com>

Hi, i am having a doubt considering what is a proper oracle expression.

http://www.acs.ilstu.edu/docs/Oracle/server.101/b10759/statements_10002.htm

In the select referene, there is a number of times where the expr statemnt appears.

I am trying to figure out what an expr is: is it simply a sequence of Varibles, Constants, function and Operators that are evaluated to a result.

Or can you include more sophisticated things like If statemnets?

For Example in the "Description of the illustration model_rules_clause.gif"
you have got a vector index being assigned an Expression. Could this expression include if statements?

If so... i don't seem to be able to execute it with them.

Thanks in advance. Received on Wed Oct 22 2008 - 09:31:05 CDT

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