Wiki Loves Butterfly - Contributors Per Year

This query is marked as a draft This query has been published by Sumitsurai.

Wiki Loves Butterfly - Contributors Per Year

SQL

Select 
     cat.cl_from , Year(cat.cl_timestamp), rev.rev_id, rev.rev_actor , Count(distinct(rev.rev_actor))
From 
     categorylinks AS cat
Join revision As rev
     ON rev_page = cl_from
Where 
     cat.cl_to='Images_from_Wiki_Loves_Butterfly' 
AND
     rev.rev_parent_id = 0
Group by 
     Year(cat.cl_timestamp)

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