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Inspired by requests such as this one.

I've been wondering how much work it takes the mods to perform a retag. Not that I want to ask for one, but simply because I'm curious ...

Also, as a side question which might be more interesting: Would there be some value to a system which automatically retagged certain popular retag requests behind the scenes? In other words, if a user asked a question and tagged it with "winforms," the StackExchange engine might automatically retag it "windows-forms?" (The only way I can see this working is if all retags performed by mods were tracked, and then as a retag was performed, StackExchange would learn that in the future no new questions should be allowed to use the replaced tag. Don't know what that would do to performance.)

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a couple magical SQL statements... – Troggy Aug 13 '09 at 22:37
up vote 3 down vote accepted

All it takes to do a mass retagging is to put in the current tag and the tag we want, and the retag happens pretty much in an instant.

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Thanks for satisfying my curiosity! – John Rudy Aug 13 '09 at 23:38

The way that moderators retag is through batch retagging.

Auto retagging has been discussed before.

Tagging Synonyms

Automated Similar tags finder

Duplicate tags

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