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Posted By

bradless on 02/19/10


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mysql date difference status change Subquery datediff


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dantreacy
virendrakryadav


calculate the difference between dates in one columns within the same table

 / Published in: MySQL
 

I use something similar to the example to get the difference between statuses in a status log table that I have. It comes in handy when determining the number of days between status changes. This works in MySQL 5.0.

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  1. SELECT DATEDIFF(
  2.  (SELECT DATE(date_field) FROM table WHERE id = '1' AND status_id = '2' ORDER BY date_field DESC LIMIT 1),
  3.  (SELECT DATE(date_field) FROM table WHERE id = '1' AND status_id = '1' ORDER BY date_field DESC LIMIT 1)
  4. 	) AS difference

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