Update description:

Update description:

< * Allow ORDER BY ... LIMIT 1 to select high/low value without sort or
> * Allow ORDER BY ... LIMIT # to select high/low value without sort or
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<   Right now, if no index exists, ORDER BY ... LIMIT 1 requires we sort
>   Right now, if no index exists, ORDER BY ... LIMIT # requires we sort
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>   MIN/MAX already does this, but not for LIMIT > 1.