Proposition of Erratum for ADQL-2.1

[Mark Taylor]

I support this!

On Tue, 14 Apr 2026, Gregory MANTELET via dal wrote:

> Dear DAL members,
> 
> Following the proposition made (hum...2 years ago) in the GitHub Issue #78
> <https://github.com/ivoa-std/ADQL/issues/78>,
> I propose an erratum for ADQL-2.1 in order to add 2 alternative versions of
> the
> ADQL BNF grammar as auxiliary files:
> 
> - textual version <https://github.com/ivoa-std/ADQL/blob/master/adql.bnf>
>   (which is actually the source of the grammar include in the ADQL document)
> - HTML version <https://github.com/ivoa-std/ADQL/blob/master/adql-bnf.html>
>   (with links to easily navigate inside the BNF ; quite useful for easy and
>   quick discovery of this grammar)
> 
> Both are only available in GitHub. The idea of this erratum is to make them
> also available through the IVOA Document Repository. Links toward these files
> will then be added inside the Appendix A of the ADQL-2.1 document showing
> the entire BNF.
> 
> I have already written the Erratum in the IVOA's twiki:
> 
> https://wiki.ivoa.net/twiki/bin/view/IVOA/ADQL-2_1-Err-1
> 
> I strongly encourage anyone interested into ADQL to take a look on this.
> 
> If you agree or disagree with this erratum or want to comment or change
> anything, do not hesitate to answer to this email or to communicate through
> the GitHub Issue #78 <https://github.com/ivoa-std/ADQL/issues/78>.
> 
> If no disagreement, I plan to present this erratum at the next TCG meeting
> in two weeks.
> 
> Cheers,
> Grégory M.
> 

--
Mark Taylor  Astronomical Programmer  Physics, Bristol University, UK
m.b.taylor at bristol.ac.uk          https://www.star.bristol.ac.uk/mbt/