# Documentation

Find information, examples, FAQs and extensive descriptions of the data, curated by the survey teams.

#### Reference

A complete guide to using Data Central
May 20, 2020 by J. Ware
May 20, 2020, 5:38 a.m. J. Tocknell

## How many brightest cluster galaxies are also central cluster galaxies at low redshifts

For GAMA groups with Ngal > 4 and 0.02 < z < 0.1, how many brightest cluster galaxies are also central cluster galaxies.

This case requires bounds on variables within the same table. Look into the Schema Browser to find a suitable survey.

SELECT t1.GroupID, t1.Nfof, t1.IterCenCATAID, t1.Zfof, t1.BCGCATAID
From G3CFoFgroup as t1
Where t1.Zfof BETWEEN 0.02 and 0.1
AND t1.Nfof > 4
May 20, 2020 by J. Ware
May 20, 2020, 5:38 a.m. J. Tocknell