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May 26, 2020 by J. Tocknell
May 26, 2020, 7:41 a.m. J. Tocknell

What is SQL/ADQL?

How do I use SQL and ADQL to access data on Data Central

SQL (Structured Query Language) is a programming language which allows you to access, filter and process data when stored in a database. ADQL (Astronomical Data Query Language) builds on top of SQL, adding additional astronomy-specific features to the language. There are a large number of tutorials and resources online about learning SQL, such as:

There are fewer ADQL tutorials online, but the GAIA team produced a tutorial, which also references other online resources for learning ADQL.


Additionally, you can download TOPCAT, which can be a bit easier to get started with, which can help write SQL/ADQL queries. The TOPCAT website also includes links to more resources on ADQL.

May 26, 2020 by J. Tocknell
May 26, 2020, 7:41 a.m. J. Tocknell