ENH: Add prefix parameters for join method. #8197
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| Answering in #8139 (to first discuss general idea there) |
jreback added API Design Enhancement Reshaping 
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| closing pls reopen if/when updated |
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Addresses #8139. Not sure how people feel about this one, in terms of adding clutter to the api, but it was pretty easy to get working, so I thought I'd put this together to show what changes would need to be made. I might still need to go over
DataFrame.merge()to see if the same arguments can be added for consistency.