Another useful bit of SQL

August 27, 2008

 The problem was to take this data

RIC Visibility
BMWG.DE 1
BMWG.DE 0
CONG.DE 0

 and return a distinct list of RICs, with the lowest possible Visibility value. 
The SQL needed was

select distinct Ric,Visibility from Table
group by  Ric
having Visibility = min(Visibility)
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