New interfaces and interactions
VO Partner's corner
ADQL (Astronomical Data Query Language) is a SQL-like language specifically designed to query VO services and particularly TAP. It is defined by the IVOA in the following document: http://www.ivoa.net/Documents/latest/ADQL.html. To sum up ADQL adds to the basic SQL syntax some functions to select sky regions. For instance:
CONTAINS(POINT('ICRS', ra, dec), CIRCLE('ICRS', 10, 5, 2) = 1 corresponds to a cone search around (10°,5°) with a radius of 2°.
This library lets parsing, editing and translating queries expressed in ADQL 2.0.