Astronomical Data Query Language

The Astronomical Data Query Language (ADQL) is the language used by the IVOA to represent astronomy queries posted to VO services. ADQL is based on the Structured Query Language, especially SQL 92; special restrictions and extensions have been defined in order to support generic and astronomy specific operations.

Current recommendation

The current IVOA Recommendation is ADQL-2.0 (30 October 2008).

ADQL-2.0-Next page collects errata, proposed features and notes while developing the next revision of the specification.

ADQL-2.1 Working draft

Compiled PDF

• DAL Internal WD (2015-06-01): WD-ADQL-2.1-20150601 (svn revision 2983)

Document source

The ADQL specification is based on the ivoatex environment.

The source code for the document can be found online in the volute repository.

• ADQL document

Use the following commmand to checkout a local copy of the document source.

    svn checkout https://volute.googlecode.com/svn/trunk/projects/dal/ADQL

Previous versions

• [[http://www.ivoa.net/Documents/WD/ADQL/ADQL-20050602.pdf][]]