Does limiting a query to one record improve performance

Question

Will limiting a query to one result record, improve performance in a large(ish) MySQL table if the table only has one matching result?

for example

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Answer 1

I believe the LIMIT is something done after the data set is found and the result set is being built up so I wouldn't expect it to make any difference at all. Making name the primary key will have a significant positive effect though as it will result in an index being made for the column.