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PostGIS adds support for geographic objects to PostgreSQL. It implements some of the OpenGIS specifications.
The events table has been modified to comply with the OpenGIS standard. The following statement has been sent to the database :
select id, time, energy from events where error &&
GeomFromText('POLYGON((ra_max dec_max, ra_max dec_min, ra_min dec_min, ra_min dec_max, ra_max dec_max)', -1)

The response time is ** 3.1 seconds.
A GIST index has been built.
The response time is 2. seconds.

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