Introduction to SQLQueries are carried out on the VSA database using SQL (Structured Query Language).
Simple queries are made up of 3 basic commands: select, from and where.
select - list the parameters you wish to extract (separated by commas) e.g. select ra,dec,kMag
from - list the table names you need to access e.g. from vhsSource
where - provide any constraints e.g. where kMagErr < 0.05
to give the full query
An introductory SQL tutorial can be found here.
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