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
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.
Use the following command to checkout a local copy of the document source.
svn checkout https://volute.g-vo.org/viewvc/volute/trunk/projects/dal/ADQL
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