Counts the number of distinct tag wikis that you've edited.
Q&A about the site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
COUNT(DISTINCT Posts.Id) as TagWikisEdited,
CAST(CONVERT(DECIMAL(5,2), COUNT(DISTINCT Posts.Id) * 2.0) as VARCHAR(6)) + '%' as Progress
from SuggestedEdits as Edit
LEFT JOIN Posts on Edit.PostId=Posts.Id
AND Posts.PostTypeId = 5
AND Edit.ApprovalDate is not null