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YearWeek() addition to documentation
Posted by: M. G.
Date: September 03, 2009 05:58AM

To my delight I found that the YearWeek(some_date) does maintain continuality across year boundaries. A week which starts on the previous year but ends in the next year is kept as a single week. This is great when one wants to aggregate daily data into weekly data. (e.g.,…GROUP BY YEARWEEK(TRANSACTION_DATE)…)
This behavior is not documented. I think it should!
(BTW, if one does not like this behavior and would like to split the week into separate years he/she can use the WEEK() function. Shouldn't this be documented too?)

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