Re: ADQL and SQL

From: Ray Plante <rplante-at-poplar.ncsa.uiuc.edu>
Date: Tue, 10 Feb 2004 11:13:05 -0600 (CST)


On Tue, 10 Feb 2004, Alberto Micol wrote:
> I wonder whether ADQL should or could take care of stopping wrong queries
> from being executed ...

Given that ADQL is a language and not a program, it in and of itself cannot prevent incorrect queries. Also, I don't think the converter claims to be a verifier. garbage in, garbage out.

> 3) Why are the table aliases required ? That's not standard SQL...
> I presume that's just the way the Convertor.aspx was built.

Although I am not that service's author, I think the converter should be actually be called a SkyQL to ADQL converter, where SkyQL is defined in the ADQL spec as a restricted form of SQL. That spec specifically requires table aliases.

cheers,
Ray Received on 2004-02-10Z18:13:35