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.