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 ongoing activity

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

Previous activities and Versions

Last REC: ADQL-2.0 (2008-10-30)

Previous activities on ADQL, up to ADQL-2.0 Recommendation, can be found on the Virtual Observatory Query Language (VOQL) Working Group page, please note that that WG was merged to DAL on May 2010.